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Sharks are large fish that have lived on the Earth for
millions of years. They live in waters all over the
world, in every ocean, and even in some rivers and lakes.
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Sharks do not have bones; their skeleton is made of
cartilage, which is a tough, fibrous substance, not nearly as
hard as bone. |
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Diet:
Different sharks have different diets, but they are
meat-eaters (carnivores).
Great white sharks, mako sharks, tiger sharks, and hammerhead
sharks eat fish, squid, other sharks and marine mammals. |
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Zebra horn sharks, angelsharks, and wobbegong sharks crush and
eat shellfish (such as crabs and clams) from the ocean floor.
The whale
shark, basking shark and megamouth shark are filter feeders
that skim plankton and small animals from the water as they
swim with their mouths open. They have to eat great
amounts of plankton and the small animals to fill themselves
up. |
Habitat
and Shelter:
Sharks live in oceans and seas all over the world, and even in
some rivers and lakes, especially in warmer waters. Some
sharks live near the surface, some live deep in the water, and
others live on or near the ocean floor. Sharks do not
usually go near land, so you will not see them in Georgia
unless you are in the ocean along Georgia's coast. |
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Predators:
Sharks have very few predators other than humans. Groups
of dolphins have been known to attack sharks. Killer
whales as well as other fish are also enemies of sharks. |
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