Shark

shark
In some form, sharks have been around for about 400 million years.

Even before dinosaurs roamed the earth, sharks hunted through the oceans! They're such good survivors that they've had little need to evolve in the last 150 million years.
Sharks have the most powerful jaws on the planet. Unlike most animals' jaws, both the sharks' upper and lower jaws move.
A shark bites with it's lower jaw first and then its upper. It tosses its head back and forth to tear loose a piece of meat which it swallows whole.
Normally, sharks eat alone. But sometimes one feeding shark attracts others. They swim up as quickly as possible and all begin to try to get a piece of the prey. They bite wildly at anything that gets in their way -- even each other.

The great white shark rarely partakes in feeding frenzies.

some species
ANGEL SHARK
BASKING SHARK
BLACKTIP REEF SHARK
BLUE SHARK
BULL SHARK
COOKIECUTTER SHARK
GREAT WHITE SHARK
HAMMERHEAD SHARK
THRESHER SHARK
TIGER SHARK