Sharks - Feeding And Diet
eat prey approaches water
All sharks are carnivorous, meaning that they only eat other animals. The range of prey eaten by sharks is extremely broad, from snails to sea urchins, crabs, fish, rays, other sharks, seals, and birds. Some sharks eat carrion (animals that are already dead), but most only eat live prey. Sharks eat relatively little for their size, compared to mammals, because they do not use energy to maintain a high body temperature. Sharks eat the equivalent of 1-10% of their body weight per week, usually in one or two meals. Between meals they digest their food, and they do not eat again until they have finished digesting their previous meal.
Sharks that eat prey with hard shells, such as bullhead sharks, have flat crushing teeth. Bullheads eat a variety of prey, including barnacles, crabs, sea stars, and snails, which they crush with their rear teeth. The two largest sharks, whale sharks and basking sharks, eat nothing larger than 1-2 in (2-5 cm) long. These whales filter their tiny prey (called krill) from the water using their gills as giant strainers. The whales swim through the water with their mouth open, and small crustaceans in the water get caught in mesh-like extensions of the gills. Once caught, the krill are funneled back to the whale's throat and swallowed.
Species such as white sharks, makos, tiger sharks, and hammerheads attack and eat large fish, other sharks, and marine mammals such as seals. The feeding biology of the white shark has been well studied. This shark often approaches its prey from below and behind, so it is less visible to its victim. It approaches slowly to within a few meters, then rushes the final distance. If the prey is too large to be taken in one bite, the shark will bite hard once, and then retreat as the prey bleeds. When the prey is weakened, the shark again approaches for the kill.
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about 1 year ago
kristen
Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: Semiotics to Smelting » Sharks - Evolution And Classification, Overview Of Shark Groups, Structural And Functional Adaptations, Locomotion And Buoyancy
Sharks - Feeding And Diet
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All sharks are carnivorous, meaning that they only eat other animals. The range of prey eaten by sharks is extremely broad, from snails to sea urchins, crabs, fish, rays, other sharks, seals, and birds. Some sharks eat carrion (animals that are already dead), but most only eat live prey. Sharks eat relatively little for their size, compared to mammals, because they do not use energy to maintain a high body temperature. Sharks eat the equivalent of 1-10% of their body weight per week, usually in one or two meals. Between meals they digest their food, and they do not eat again until they have finished digesting their previous meal.
Sharks that eat prey with hard shells, such as bullhead sharks, have flat crushing teeth. Bullheads eat a variety of prey, including barnacles, crabs, sea stars, and snails, which they crush with their rear teeth. The two largest sharks, whale sharks and basking sharks, eat nothing larger than 1-2 in (2-5 cm) long. These whales filter their tiny prey (called krill) from the water using their gills as giant strainers. The whales swim through the water with their mouth open, and small crustaceans in the water get caught in mesh-like extensions of the gills. Once caught, the krill are funneled back to the whale's throat and swallowed.
Species such as white sharks, makos, tiger sharks, and hammerheads attack and eat large fish, other sharks, and marine mammals such as seals. The feeding biology of the white shark has been well studied. This shark often approaches its prey from below and behind, so it is less visible to its victim. It approaches slowly to within a few meters, then rushes the final distance. If the prey is too large to be taken in one bite, the shark will bite hard once, and then retreat as the prey bleeds. When the prey is weakened, the shark again approaches for the kill.
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Sharks - Feeding And Diet
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over 1 year ago
monica » flirt_227 ((at)) yahoo dot com
A sharks sensory is different than that of a normal fish. A sharks site isn't very good. Therefore they rely on their sense of smell and taste. A shark can attack for one of 2 reasons. The first being mistaken identity. The second being it thinking you're another shark. They "nip" eachother to let the other know 'get out of my territory'. A sharks skin is harder than a humans but you get the jist.
over 3 years ago
tanner carrier » tannercarrier ((at)) hotmail dot com
Sharks don't eat people, many people think they do, but they take a bite and leave. The shark thinks the person is in the sharks teratory. They only eat fish, dolphins, sea lions, and other sharks if they can.
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Read more: Sharks - Feeding And Diet - Eat, Prey, Approaches, Water, Teeth, and Whales http://science.jrank.org/pages/6117/Sharks-Feeding-diet.html#ixzz1C3qqCviW
over 2 years ago
A sharks sensory is different than that of a normal fish. A sharks site isn't very good. Therefore they rely on their sense of smell and taste. A shark can attack for one of 2 reasons. The first being mistaken identity. The second being it thinking you're another shark. They "nip" eachother to let the other know 'get out of my territory'. A sharks skin is harder than a humans but you get the jist.
almost 5 years ago
Sharks don't eat people, many people think they do, but they take a bite and leave. The shark thinks the person is in the sharks teratory. They only eat fish, dolphins, sea lions, and other sharks if they can.