Eventually they draw the prey into their mouth and use their strong jaws and thick, crushing tooth plates to break open the shells. For other species of cownose rays, see Rhinoptera.

Cownose rays live in schools near the surface of shallow waters. Dictionnaire Anglais-Français : traduire du Anglais à Français avec nos dictionnaires en ligne. Cownose rays have poisonous stingers, however, since they are shy and generally swim at the surface, they pose a minimal risk to humans stepping on their spine. Présente dans la mer Rouge, le golfe d'Aden, en Somalie et à Madagascar la Lyncina camelopardalis est une porcelaine très recherchée par les collectionneurs qui vit parmi les madrépores jusqu'à m de profondeur. Mating takes place in June or July each summer. August 1, The cownose rays destruction of large oyster beds only further puts oyster beds at risk. A female will swim with the edges of her pectoral fins sticking out of the water, with male cownose rays following her trying to grasp the fins to mate.

Accueil Mappy Plan Coray. If threatened, the cownose ray can also use their barb as a weapon to sting the aggressor. Pour garantir la qualité des commentaires, nous vous prions de vous identifier. Cownose rays form schools based on sex and age. Once cownose rays detect their prey, they flap their pectoral fins while also sucking up sediment through their mouths and out their gill slits. Assiniboine Park Zoo. Saint Louis Zoo. Initially it is nourished by an egg yolk , although the uterine secretions of the mother nourish it later in its development.

A cownose ray has a spine with a toxin , close to the ray's body. Retrieved September 25, A ray reaching a span of 84 inches 2. Click here or below to download hands-on marine science activities for kids. The cownose ray has a jaw that reflects its diet of: benthic bivalve mollusks, crustaceans, and polychaetes. Only after the young are able to survive on their own does the mother give birth to her young. It is, however, often caught by hobby fishermen. Some schools can be very large.

Help Learn to edit Community portal Recent changes Upload file. It uses two modified fins on its front side to produce suction, which allows it to draw food into its mouth, where it crushes its food with its dental plates. Males leave the Bay in June-July for offshore waters. Cownose rays breed from June through October. However, while the migration patterns can tracked, the exact reason for migration is currently unknown. This species is a foraging predator that specializes on shelled, invertebrate prey including clams, snails, lobsters, oysters and crabs. The cownose ray sits fairly high up on the food chain, and as a result only has a few natural predators. Although its coloration is not particularly distinctive, its shape is easily recognizable. After mating, male cownose rays leave the Bay while females stay until October. Cownose rays are named for their distinctly creased head lobes that resemble the nose of a cow.

The cownose rays destruction of large oyster beds only further puts oyster beds at risk. This bacteria causes shigellosis , and can result in dysentery. Cownose rays are named for their distinctly creased head lobes that resemble the nose of a cow. Dictionnaire Anglais-Français : traduire du Anglais à Français avec nos dictionnaires en ligne. Though cownose rays are not targeted in commercial fisheries, they are often captured accidentally in fisheries targeting other species. The Monetaria annulus is a small cowry very common in the Red Sea and in the Indo-Pacific, once used as currency by the local populations. Cownose rays typically swim in groups, which allows them to use their synchronized wing flaps to stir up sediment and expose buried clams and oysters. Inscription Connexion Login. Retrieved 5 June

Present in the Red Sea, Gulf of Aden, Somalia and Madagascar, the Lyncina camelopardalis is a cowry living among the madrepores up to m of depth. The largest cownose ray ever recorded was 7 feet 2. At full term, the offspring are born live , exiting tail first. Migration may be influenced by water temperature and sun orientation, which explains the seasonal migration pattern. The cownose ray has a jaw that reflects its diet of: benthic bivalve mollusks, crustaceans, and polychaetes. Only after the young are able to survive on their own does the mother give birth to her young. A ray reaching a span of 84 inches 2. It is unknown whether their migratory behavior is due to feeding or premigratory mating activity. Saint Louis Zoo. Females remain in the Bay until autumn, when they leave the estuary and migrate together with males to southern coastal waters.

Cownose rays are strong swimmers that have been seen migrating in groups of up to 10, rays. Pour ajouter des entrées à votre liste de vocabulaire , vous devez rejoindre la communauté Reverso. Cownose rays are opportunistic feeders, eating whatever is available. The cownose ray is a brown, kite-shaped ray with a long, whip-like tail. Quick Facts Species Native Size Wingspan up to three feet; weighs up to 50 pounds Habitat Live in schools near the surface of shallow waters, forming schools based on sex and age. Mating takes place in June or July each summer. After an month gestation period, females give birth to a single live young, called a pup, in mid-June the following summer. It has a broad head with wide-set eyes, and a pair of distinctive lobes on its subrostral fin. It uses two modified fins on its front side to produce suction, which allows it to draw food into its mouth, where it crushes its food with its dental plates. This spine has teeth lining its lateral edges, and is coated with a weak venom that causes symptoms similar to that of a bee sting.

At full term, the offspring are born live , exiting tail first. It is a quite small cowry , up to 3 cm 1. The largest cownose ray ever recorded was 7 feet 2. A large school of cownose rays gather of varying ages and sexes in shallow waters. Retrieved September 25, Pour garantir la qualité des commentaires, nous vous prions de vous identifier. In the Gulf of Mexico , females live up to 18 years, and males only live up to 16 years. Cownose rays form schools based on sex and age. Pour les coquillages, vous pouvez utiliser le cauri. Présente dans la mer Rouge, le golfe d'Aden, le golfe d'Oman et sur les côtes du centre-Est de l'Afrique la Naria nebrites est une petite porcelaine d'environ 4 cm connue aussi sous le nom de Erosaria nebrites.

Diet Feeds on mollusks such as oysters, hard clams and soft-shelled clams Lifespan 13 to 18 years Status Threatened. Pour garantir la qualité des commentaires, nous vous prions de vous identifier. Encyclopaedia Britannica. When threatened the cownose ray can use the barb at the base of its tail to defend itself from the threat. The cownose ray's kite-shaped body has a wingspan of up to three feet and can weigh as much as 50 pounds. There is some controversy over the size that a mature cownose ray can reach. A ray reaching a span of 84 inches 2. Namespaces Article Talk. Ou utilisez le compte Reverso.

Rhinoptera bonasus. After birth, mating occurs and the cycle begins again. Cownose rays vary in color from brown to olive green with a whitish belly. It is, however, often caught by hobby fishermen. Only after the young are able to survive on their own does the mother give birth to her young. Ripley's Aquarium of Canada. Chesapeake Bay Program. Females remain in the Bay until autumn, when they leave the estuary and migrate together with males to southern coastal waters. Archived from the original on Generally found in shallow marine and brackish coastal waters, cownose rays are also known to form large schools and migrate long distances.

A propos de Mappy Qui sommes-nous? There is some controversy over the size that a mature cownose ray can reach. Accueil Mappy Plan Coray. Cownose Ray Rhinoptera bonasus. This bacteria causes shigellosis , and can result in dysentery. Cownose rays breed from June through October. Ou utilisez le compte Reverso. A mature specimen can grow to 45 inches 1. Retrieved 5 June

Help Learn to edit Community portal Recent changes Upload file. August 1, A female will swim with the edges of her pectoral fins sticking out of the water, with male cownose rays following her trying to grasp the fins to mate. Bluefish Pomatomus saltatrix. Shigella may be acquired from eating meat from a cownose ray that has been contaminated with the bacteria. Sexual maturity for both males and females is reached around 4 to 5 years of age. Although its coloration is not particularly distinctive, its shape is easily recognizable. The cownose ray sits fairly high up on the food chain, and as a result only has a few natural predators. Cownose rays have mildly venomous spines and typically only sting when threatened. However, while the migration patterns can tracked, the exact reason for migration is currently unknown.

Though cownose rays are not targeted in commercial fisheries, they are often captured accidentally in fisheries targeting other species. A sting from a cownose ray can cause a very painful wound that requires medical attention once stung. Cownose rays breed from June through October. Related Critters Black Drum Pogonias cromis. Cownose rays can be seen in many public aquaria worldwide and are often featured in special 'touch tanks' where visitors can reach into a wide but shallow pool containing the fish, which have often had their barbs pinched or taken off they eventually regrow, similar to human nails , making them safe enough to touch. There is some controversy over the size that a mature cownose ray can reach. Archived from the original on Mating takes place in June or July each summer. Present in the Red Sea, Gulf of Aden, Somalia and Madagascar, the Lyncina camelopardalis is a cowry living among the madrepores up to m of depth.

Cownose rays vary in color from brown to olive green with a whitish belly. Rhinoptera bonasus. Cownose rays are strong swimmers that have been seen migrating in groups of up to 10, rays. Atlantic Sturgeon Acipenser oxyrhynchus. On va où? It varies in color from brown to olive green with a whitish belly and a long, brown tail that looks like a whip. At birth, pups are about 11 to 18 inches long. At full term, the offspring are born live , exiting tail first. However, their migration patterns and reason for traveling such long distances i. Encyclopaedia Britannica.

Cownose rays breed from June through October. Cownose rays are strong swimmers that have been seen migrating in groups of up to 10, rays. A female will swim with the edges of her pectoral fins sticking out of the water, with male cownose rays following her trying to grasp the fins to mate. One solution to the cownose rays' destruction of oyster beds, as well as their overpopulation in certain areas, is to open the ray up for commercial fishing. Live in schools near the surface of shallow waters, forming schools based on sex and age. Views Read Edit View history. Rays will lash their tails when threatened, posing a risk of being whipped. Like all eagle rays, cownose rays are active swimmers and are rarely found lying motionless on the seafloor like the closely related whiptail stingrays e. A mature specimen can grow to 45 inches 1. Females remain in the Bay until autumn, when they leave the estuary and migrate together with males to southern coastal waters.

Consulter aussi: cow , cower , cor , corky. Jump to navigation. Related Critters Black Drum Pogonias cromis. Some people have suggested a possible future fishery for this moderately common ray, which may have an adverse impact on their populations if not properly managed. Traduction cowry Dictionnaire Anglais-Français. Shigella may be acquired from eating meat from a cownose ray that has been contaminated with the bacteria. Florida Museum. After an month gestation period, females give birth to a single live young, called a pup, in mid-June the following summer.

Live in schools near the surface of shallow waters, forming schools based on sex and age. Although recent diet studies have shown that oysters and hard clams were not found to be large parts of the cownose ray's diet, intensive feeding on oysters or clams can occur. Pour ajouter des entrées à votre liste de vocabulaire , vous devez rejoindre la communauté Reverso. Jump to navigation. Cownose rays vary in color from brown to olive green with a whitish belly. Generally, each female only produces one pup at a time. The Monetaria annulus is a small cowry very common in the Red Sea and in the Indo-Pacific, once used as currency by the local populations. Archived from the original on This bacteria causes shigellosis , and can result in dysentery.

The length of gestation is disputed, but it is believed to last between 11 and 12 months and is variable. Retrieved September 25, Present in the Red Sea, Gulf of Aden, gulf of Oman and the central-eastern African coasts, the Naria nebrites is a small cowry of about 4 cm known also as Erosaria nebrites. One solution to the cownose rays' destruction of oyster beds, as well as their overpopulation in certain areas, is to open the ray up for commercial fishing. A sting from a cownose ray can cause a very painful wound that requires medical attention once stung. Cownose ray Conservation status. Take Action. Present in the Red Sea, Gulf of Aden, Somalia and Madagascar, the Lyncina camelopardalis is a cowry living among the madrepores up to m of depth.

Présente dans la mer Rouge, le golfe d'Aden, en Somalie et à Madagascar la Lyncina camelopardalis est une porcelaine très recherchée par les collectionneurs qui vit parmi les madrépores jusqu'à m de profondeur. For shellfish, you can use cowry. Tous les hôtels près d'ici Dates. Embryos live off of energy obtained from yolk sacs, and then later in their development are nourished by the uterine secretions of their mother. Fun Facts About Cownose Rays 1. Cownose rays are strong swimmers that have been seen migrating in groups of up to 10, rays. It also has a set of dental plates designed for crushing clams and oyster shells. They find their prey by flapping their fins against the bottom to uncover buried shellfish, then using their powerful dental plates to crush the shells open. It uses two modified fins on its front side to produce suction, which allows it to draw food into its mouth, where it crushes its food with its dental plates. Females remain in the Bay until autumn, when they leave the estuary and migrate together with males to southern coastal waters.

Cownose rays are named for their distinctly creased head lobes that resemble the nose of a cow. A cownose ray is typically brown-backed with a whitish or yellowish belly. Saint Louis Zoo. They find their prey by flapping their fins against the bottom to uncover buried shellfish, then using their powerful dental plates to crush the shells open. Cownose rays form schools based on sex and age. Jump to navigation. Download as PDF Printable version. Retrieved Like all eagle rays, cownose rays are active swimmers and are rarely found lying motionless on the seafloor like the closely related whiptail stingrays e. Cownose rays vary in color from brown to olive green with a whitish belly.

Pour garantir la qualité des commentaires, nous vous prions de vous identifier. Symptoms can include diarrhea , pain, fever, and possible dehydration. Atlantic Sturgeon Acipenser oxyrhynchus. Quebec Aquarium. August 1, Cownose rays have poisonous stingers, however, since they are shy and generally swim at the surface, they pose a minimal risk to humans stepping on their spine. Consulter aussi: cow , cower , cor , corky. Retrieved 20 June

Cownose rays breed from June through October. Ou utilisez le compte Reverso. Related Critters Black Drum Pogonias cromis. Mitchill , These schools can be seen and migration tracked via airplane as it is easy to see the schools from the sky. Cownose Ray Rhinoptera bonasus. Encyclopaedia Britannica. They find their prey by flapping their fins against the bottom to uncover buried shellfish, then using their powerful dental plates to crush the shells open. Take Action.

This bacteria causes shigellosis , and can result in dysentery. A propos de Mappy Qui sommes-nous? La Monetaria annulus est une petite porcelaine très commune dans la mer Rouge et le bassin indopacifique qui a été utilisée autrefois comme monnaie par les populations locales. A sting from a cownose ray can cause a very painful wound that requires medical attention once stung. Quebec Aquarium. Southern migration may be influenced by solar orientation and Northern migration may be influenced by the change in water temperature. Although its coloration is not particularly distinctive, its shape is easily recognizable. The cownose ray is a brown, kite-shaped ray with a long, whip-like tail. Dictionnaire Anglais-Français : traduire du Anglais à Français avec nos dictionnaires en ligne. Cownose rays are ovoviviparous, meaning eggs develop and are hatched within the body of the mother.

Atlantic Sturgeon Acipenser oxyrhynchus. Diet Feeds on mollusks such as oysters, hard clams and soft-shelled clams Lifespan 13 to 18 years Status Threatened. Consulter aussi: cow , cower , cor , corky. Wikimedia Commons Wikispecies. Namespaces Article Talk. In the Gulf of Mexico , females live up to 18 years, and males only live up to 16 years. Pour garantir la qualité des commentaires, nous vous prions de vous identifier. Mitchill , It uses two modified fins on its front side to produce suction, which allows it to draw food into its mouth, where it crushes its food with its dental plates.

Mating takes place in June or July each summer. Cownose rays are calm, graceful swimmers and are often featured in public engagement exhibits — such as touch tanks — in aquariums throughout their range. Cownose rays are strong swimmers that have been seen migrating in groups of up to 10, rays. A female will swim with the edges of her pectoral fins sticking out of the water, with male cownose rays following her trying to grasp the fins to mate. Shigella may be acquired from eating meat from a cownose ray that has been contaminated with the bacteria. Cownose rays have mildly venomous spines and typically only sting when threatened. A large school of cownose rays gather of varying ages and sexes in shallow waters. Encyclopaedia Britannica. At full term, the offspring are born live , exiting tail first.

Males leave the Bay in June-July for offshore waters. Rhinoptera bonasus Mitchill , Cownose rays form schools based on sex and age. Cownose rays are opportunistic feeders, eating whatever is available. The cownose ray Rhinoptera bonasus is a species of eagle ray found throughout a large part of the western Atlantic and Caribbean , from New England , United States to southern Brazil East Atlantic populations are now generally considered a separate species, R. There is some controversy over the size that a mature cownose ray can reach. They find their prey by flapping their fins against the bottom to uncover buried shellfish, then using their powerful dental plates to crush the shells open. A sting from a cownose ray can cause a very painful wound that requires medical attention once stung.

After birth, mating occurs and the cycle begins again. Help Learn to edit Community portal Recent changes Upload file. Home Marine Life. Namespaces Article Talk. Southern migration may be influenced by solar orientation and Northern migration may be influenced by the change in water temperature. If threatened, the cownose ray can also use their barb as a weapon to sting the aggressor. The cownose ray's kite-shaped body has a wingspan of up to three feet and can weigh as much as 50 pounds. Click here or below to download hands-on marine science activities for kids. Rejoignez Reverso.

Females remain in the Bay until autumn, when they leave the estuary and migrate together with males to southern coastal waters. Cownose rays can be seen in many public aquaria worldwide and are often featured in special 'touch tanks' where visitors can reach into a wide but shallow pool containing the fish, which have often had their barbs pinched or taken off they eventually regrow, similar to human nails , making them safe enough to touch. A sting from a cownose ray can cause a very painful wound that requires medical attention once stung. From Wikipedia, the free encyclopedia. Southern migration may be influenced by solar orientation and Northern migration may be influenced by the change in water temperature. The feeding habits of cownose rays is cause for increasing concern, as they are known for destroying oyster beds that are already being destroyed largely by human pollution. Live in schools near the surface of shallow waters, forming schools based on sex and age. Pour ajouter des entrées à votre liste de vocabulaire , vous devez rejoindre la communauté Reverso. This species is a foraging predator that specializes on shelled, invertebrate prey including clams, snails, lobsters, oysters and crabs. It is, however, often caught by hobby fishermen.

Cownose rays appear naturally in the Eastern and Western Atlantic Ocean. Cownose rays can be seen in many public aquaria worldwide and are often featured in special 'touch tanks' where visitors can reach into a wide but shallow pool containing the fish, which have often had their barbs pinched or taken off they eventually regrow, similar to human nails , making them safe enough to touch. Commentaires additionnels:. The Monetaria annulus is a small cowry very common in the Red Sea and in the Indo-Pacific, once used as currency by the local populations. Encyclopaedia Britannica. C'est une toute petite porcelaine 3 cm au maximum , irrégulière et aplatie, au bord large, très calleux et grossièrement subhexagonal. However, their migration patterns and reason for traveling such long distances i. When threatened the cownose ray can use the barb at the base of its tail to defend itself from the threat. Atlantic Sturgeon Acipenser oxyrhynchus.

Eventually they draw the prey into their mouth and use their strong jaws and thick, crushing tooth plates to break open the shells. However, while the migration patterns can tracked, the exact reason for migration is currently unknown. Ou utilisez le compte Reverso. Jump to navigation. Quebec Aquarium. Retrieved 23 August August 1, Like all eagle rays, cownose rays are active swimmers and are rarely found lying motionless on the seafloor like the closely related whiptail stingrays e.

However, while the migration patterns can tracked, the exact reason for migration is currently unknown. A propos de Mappy Qui sommes-nous? August 1, Rhinoptera bonasus. The embryo grows within its mother with its wings folded over its body. Generally found in shallow marine and brackish coastal waters, cownose rays are also known to form large schools and migrate long distances. Namespaces Article Talk. Home Marine Life.

Symptoms can include diarrhea , pain, fever, and possible dehydration. This bacteria causes shigellosis , and can result in dysentery. Like all eagle rays, cownose rays are active swimmers and are rarely found lying motionless on the seafloor like the closely related whiptail stingrays e. Rhinoptera bonasus. Cownose rays are calm, graceful swimmers and are often featured in public engagement exhibits — such as touch tanks — in aquariums throughout their range. Pour les coquillages, vous pouvez utiliser le cauri. Cownose Ray Rhinoptera bonasus. Views Read Edit View history.

Generally found in shallow marine and brackish coastal waters, cownose rays are also known to form large schools and migrate long distances. They find their prey by flapping their fins against the bottom to uncover buried shellfish, then using their powerful dental plates to crush the shells open. Consulter aussi: cow , cower , cor , corky. Males leave the Bay in June-July for offshore waters. Jump to navigation. After an month gestation period, females give birth to a single live young, called a pup, in mid-June the following summer. Mating takes place in June or July each summer. Présente dans la mer Rouge, le golfe d'Aden, le golfe d'Oman et sur les côtes du centre-Est de l'Afrique la Naria nebrites est une petite porcelaine d'environ 4 cm connue aussi sous le nom de Erosaria nebrites.

Ou utilisez le compte Reverso. Cownose rays form schools based on sex and age. August 1, Females remain in the Bay until autumn, when they leave the estuary and migrate together with males to southern coastal waters. It uses two modified fins on its front side to produce suction, which allows it to draw food into its mouth, where it crushes its food with its dental plates. These rays also belong to the order Myliobatiformes , a group that is shared by bat rays, manta rays, and eagle rays. Fun Facts About Cownose Rays 1. On va où? A sting from a cownose ray can cause a very painful wound that requires medical attention once stung.

Retrieved 20 June Cownose rays have poisonous stingers, however, since they are shy and generally swim at the surface, they pose a minimal risk to humans stepping on their spine. At birth, pups are about 11 to 18 inches long. One solution to the cownose rays' destruction of oyster beds, as well as their overpopulation in certain areas, is to open the ray up for commercial fishing. It is, however, often caught by hobby fishermen. This spine has teeth lining its lateral edges, and is coated with a weak venom that causes symptoms similar to that of a bee sting. Retrieved September 25, Ripley's Aquarium of Canada. Retrieved 12 January

Once cownose rays detect their prey, they flap their pectoral fins while also sucking up sediment through their mouths and out their gill slits. Cownose rays vary in color from brown to olive green with a whitish belly. Cownose rays form schools based on sex and age. Pour les coquillages, vous pouvez utiliser le cauri. Dictionnaire Anglais-Français : traduire du Anglais à Français avec nos dictionnaires en ligne. The cownose ray prefers to feed either in the early morning hours, or in the late afternoon hours; when the waves are calm and visibility is higher than during the day. The cownose ray Rhinoptera bonasus is a species of eagle ray found throughout a large part of the western Atlantic and Caribbean , from New England , United States to southern Brazil East Atlantic populations are now generally considered a separate species, R. At birth, pups are about 11 to 18 inches long. C'est une toute petite porcelaine 3 cm au maximum , irrégulière et aplatie, au bord large, très calleux et grossièrement subhexagonal. It is unknown whether their migratory behavior is due to feeding or premigratory mating activity.

Cownose rays swim near the surface but have been seen at depths up to 72 feet 22 m. Cownose Ray Rhinoptera bonasus. Cownose rays are calm, graceful swimmers and are often featured in public engagement exhibits — such as touch tanks — in aquariums throughout their range. Tous les hôtels près d'ici Dates. Southern migration may be influenced by solar orientation and Northern migration may be influenced by the change in water temperature. Cownose rays form schools based on sex and age. A cownose ray is typically brown-backed with a whitish or yellowish belly. Ripley's Aquarium of Canada. Cownose rays are strong swimmers that have been seen migrating in groups of up to 10, rays. It uses two modified fins on its front side to produce suction, which allows it to draw food into its mouth, where it crushes its food with its dental plates.

Related Critters Black Drum Pogonias cromis. Cownose rays swim near the surface but have been seen at depths up to 72 feet 22 m. Mating takes place in June or July each summer. Traduction cowry Dictionnaire Anglais-Français. For other species of cownose rays, see Rhinoptera. Retrieved 5 June Generally, each female only produces one pup at a time. A sting from a cownose ray can cause a very painful wound that requires medical attention once stung. At birth, pups are about 11 to 18 inches long.

A sting from a cownose ray can cause a very painful wound that requires medical attention once stung. A mature specimen can grow to 45 inches 1. Some schools can be very large. Cownose rays are calm, graceful swimmers and are often featured in public engagement exhibits — such as touch tanks — in aquariums throughout their range. These rays also belong to the order Myliobatiformes , a group that is shared by bat rays, manta rays, and eagle rays. Initially it is nourished by an egg yolk , although the uterine secretions of the mother nourish it later in its development. Their jaws are extremely robust and have teeth with a hardness comparable to that of cement, allowing them to eat hard shells. Présente dans la mer Rouge, le golfe d'Aden, le golfe d'Oman et sur les côtes du centre-Est de l'Afrique la Naria nebrites est une petite porcelaine d'environ 4 cm connue aussi sous le nom de Erosaria nebrites. C'est une toute petite porcelaine 3 cm au maximum , irrégulière et aplatie, au bord large, très calleux et grossièrement subhexagonal.

In some areas, experts hypothesize that large populations of cownose rays have contributed to the decimation of local shellfish populations, threatening fisheries that target those species. This is due to the tips of the rays fins sticking out of the water, often resembling the dorsal fin of a shark. At birth, pups are about 11 to 18 inches long. Diet Feeds on mollusks such as oysters, hard clams and soft-shelled clams Lifespan 13 to 18 years Status Threatened. They find their prey by flapping their fins against the bottom to uncover buried shellfish, then using their powerful dental plates to crush the shells open. A cownose ray has a spine with a toxin , close to the ray's body. Generally, each female only produces one pup at a time. Retrieved 12 January Once cownose rays detect their prey, they flap their pectoral fins while also sucking up sediment through their mouths and out their gill slits.