As a group, sharks and batoids eat almost anything: fishes, crustaceans, molluscs, marine mammals, and other sharks.
2. While some sharks are probably not very selective feeders, certain sharks eat some foods more than others. For example, hammerhead sharks (Sphyrna spp.) are known for eating stingrays; bull sharks (Carcharhinus leucas) eat other sharks; and smooth dogfish (Mustelus spp.) eat crabs and lobsters.
3. Tiger sharks have been called "garbage cans of the sea" because they feed opportunistically on both live food and carrion. Prey includes bony fishes, other sharks, marine mammals, seabirds, and invertebrates. Tiger sharks are ecologically important predators of sea turtles and sea snakes.
4. Many sharks prey most often on the weak, inferior members of a population. They select weak, ill, injured, or dying prey because it is easier to catch.
B. Food intake
In a zoological environment, a shark eats about 1 % to 1 0% of its total body weight per week. Studies on sharks in the wild show similar food intake.
C. Methods of collecting and eating food
1 . The characteristic teeth of each species are adapted to that particular species' diet. The teeth may be serrated or smooth. Most are used for seizing prey, cutting, or crushing. For sharks, plate-like triangular teeth are the most common shape.
2. Because of the biting force exerted by sharks, teeth often break off while sharks are feeding. They are replaced by teeth in reserve rows. The lemon shark (Negaprion brevlrostris) can replace a tooth in about eight days.
3. Most predatory species of sharks seize, grasp, and tear food. A shark may circle its prospective prey and may even bump it with its snout or pectoral fins.
4. A shark's jaws are loosely connected to the rest of the skull at two points. As the upper jaw extends forward from the mouth, teeth of the lower jaw first encounter prey. The lower jaw teeth puncture and hold prey. The upper jaw teeth slice. A shark's short jaws make the bite powerful.
5. Many species of sharks and most rays are adapted for bottom feeding. Bottom feeders use the upper jaw to help pick up prey items. One example of a bottom feeder, the horn shark has two types of teeth. Front teeth are pointed for grasping and back teeth are flat and molarlike for crushing. Stingrays (family Dasyatidae) and eagle rays (family Myliobatidae) have teeth that are fused into plates.
6. Another mechanism some sharks and batoids use for collecting food is filter feeding. Rays in the family Mobulidae (Manta spp., for example), the basking shark (Cetorhinus maximus), and the megamouth shark strain enormous quantities of plankton from the water on gill rakers. Whale sharks als filter feed, but instead of using gill rakers, they strain plankton through a spongy tissue supported by cartilaginous rods between the gill arches. Filter feeders have reduced, nonfunctional teeth.
filter feeder
whale shark
7. Some elasmobranchs are quite specialized for feeding.
a. A thresher shark (Alopias spp.) uses the long upper lobe of its tail to corral schools of fish.
b. A sawfish (Pristis pectinate) moves its head from side to side and strikes prey with its long rostrum.
small tooted sawfish
A sawfish (Pristis pectinata) moves its head from side to side and strikes prey with its long rostrum.
c. Nurse sharks (family Ginglymostomatidae) use their thick lips to create suction, effectively pulling their prey from holes and crevices.
A nurse shark's (family Ginglymostomatidae) thick lips create suction, helping this shark pull prey from holes and crevices.
d. A cookiecutter shark (Isistius spp.) uses suction to attach itself to whales and large fishes; it carves out a core of flesh with its large triangular teeth.
scar
2006-11-14 06:07:39
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answer #1
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answered by ? 2
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Do Sharks Eat Sea Turtles
2016-12-12 17:18:25
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answer #2
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answered by owsley 4
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Do Sharks Eat Turtles
2016-09-30 11:20:26
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answer #3
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answered by ? 4
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What 'Sharks' are we talking about here? Fresh Water? Saltwater? If you mean the Red Tail Shark or Rainbow Shark then NO most sharks are highly aggressive and would bully younger turtles. If the shark is small and turtles big then it would be the other way round. If we are talking about marine Sharks & Turtles then NO The sharks that are sold in the aquarium trade are Cat Sharks, due to there aggressive nature there would be high stress levels in the tank and would result in death. Or the shark Would constantly attack the turtle as they are very Territorial. All in all I would advise against the idea.
2016-03-29 02:51:58
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answer #4
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answered by Anonymous
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This Site Might Help You.
RE:
Do Sharks eat Turtles?
2015-08-08 08:09:22
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answer #5
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answered by Anonymous
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of course they do, why wouldn't they? Its free food. There are some that they can't eat becaus of the shell, but sharks have sharp teeth, wide jaws, and a big open mouth. Some will eat a horse, so they will eat turtles
2006-11-15 08:25:34
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answer #6
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answered by blueicefaire 2
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Sharks only eat the turtles with pecans in them.
2006-11-14 05:42:37
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answer #7
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answered by FunBetty! 6
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Yes, sea turtles are on the tiger shark's menu.
2006-11-14 05:43:40
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answer #8
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answered by hoodoowoman 4
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yes, they love sea turtles ..
some accidents happens when sharks think bogey boarders are sea turtles and chomp them . . .
2006-11-14 05:43:54
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answer #9
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answered by a_blue_grey_mist 7
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Yes sharks eat anything they can get thier teeth on!
2006-11-14 16:33:42
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answer #10
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answered by Anonymous
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