You've heard of the Great White and the Hammerhead—but what about the lesser known but equally fierce sharks? Join Hank Green ...

Despite what you may think, shark attacks are actually very rare. In 2013, the U.S. saw a grand total of 53 unprovoked shark attacks, with only two of those reports resulting in a fatality. The truth ...

(via PBS Eons) Long before the rise of the great whites and hammerheads we know today, sharks and their cartilaginous relatives ruled Earth’s oceans and rivers in astonishing variety. It was the ...

Thanks to Opera for sponsoring this video. Port Jackson sharks live off the coast of Australia and have a mouth full of the weirdest shark teeth: pointed in the front and rounded like molars in the ...