 |
| Top Row-whale shark, bull shark Bottom Row-great white shark, tiger shark |
Sharks are most
commonly known to people as carnivorous man-eating fish. But really they are
mostly harmless to people. Only three species of sharks are considered to be
dangerous to humans, bull sharks, tiger sharks, and great white sharks. Bulls
are considered the most dangerous because of their ability to live in saltwater
and freshwater, increasing the chance of human encounter. Great whites aren't technically the largest shark;
the whale shark is (46 feet or 14 meters) is the
largest but it poses no threat to humans because it eats plankton (it does bump
into to snorkelers, though), making the great white shark the largest
carnivorous fish. Tiger sharks are named for the stripes on their back that are
similar to tigers. Let’s get to learn more about them.
Biological
Features:
Sharks’ skin is
very rough, their scales aren't smooth, their teeth like. Sharks’ teeth vary,
they can be sharp or their teeth have no use for feeding, like for sharks that
eat plankton. Some species can glow due to bioluminescence. Sharks have a
lateral line, which is a connection of canals that travel under the skin. This line
can sense waves created by prey. These fish also can sense electrical fields
created by prey, through ampullae of lorenzini.
More about the sharks
in next post…
0 comments:
Post a Comment