Shark evolution and ecology facts: Shark evolution and ecology facts· Sharks live all over the world, from warm, tropical lagoons to polar seas. Some even inhabit freshwater lakes and rivers.· Sharks are apex predators, and as such, they affect the entire ocean food chain from their position at the top.· Sharks scales dating back to around 450 million years...
Great white sharks: Great white sharks· They are the largest predatory fish on earth. They can grow to an average of 15 feet in length, through specimens exceeding 20 feet and weighing up to 5,000 pounds have been...
Tiger shark facts: Tiger sharks· Tiger sharks are named for the dark, vertical
stripes found mainly on juveniles. As they mature, the lines begin to fade.
· They are second only to great whites in
attacking people. But because they have a near completely undiscerning palate,
they are not likely to swim away after...
Whale sharks: Whale sharks· Whale sharks are the largest fish on the
planet. They can grow up to 40 feet (12.2 meters) long.
· While whale sharks, are huge, they are gentle
giants that are “filter feeders.” In order to eat, the beast juts out its
formidably sized jaws and passively filters everything in its...
Mako sharks: Mako sharks· The shortfin mako may be the fastest shark on
earth. Its muscles and body design have evolved over 400 million years to reach
top speeds of 45 to over 60 miles per hour.
· They can also leap six meters (20 feet) above
the surface of the water, and are famous for their fighting...
Bull sharks: Bull sharks· Bull sharks are aggressive and usually live
near high-population areas like tropical shorelines.
· They are not bothered by freshwater, unlike
most sharks, and have been found thousands of miles inland via rivers and
tributaries.
· Many experts consider bull sharks to be the
most...
Greenland sharks: Greenland sharks· Greenland sharks is the longest-lived
vertebrate on earth. These animals can live at least 272 years – and possibly
to 500.
· They do not reproduce until they are around
150 years old.
· Their skin is incredibly toxic, because it
contains high levels of urea and an organic compound...
Thresher sharks: Thresher sharks· Thresher sharks are known for their longer
dangerous tails, which are often just as long or longer than the rest of their
body.
· They use their long tails to “whip” their
prey.
· They are also one of the only species of shark
that jumps completely out of the water, a behavior...
Nurse sharks: Nurse sharks· Nurse sharks are slow-moving bottom dwellers
that prefer warm, shallow water.
· They are nocturnal.
· Nurse sharks usually rest on the sea floor
during the day in groups, sometimes as big as 40 sharks, piled on top of each
other.