Smithsonian Magazine on MSN

Sharklike Fish With Weird, Buzz-Saw Jaws Sliced Through the Seas, Then Vanished. Now, Paleontologists Are Unraveling Their Secrets

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...
Discover Wildlife

It has three hearts, changes colour as fast as you can blink and fools rivals into thinking it’s female – meet this clever marine creature

Cuttlefish can change colour in 200 milliseconds, as fast as a human can blink. Cuttlefish have W-shaped pupils, which are thought to help control the intensity of light entering the eye. Cuttlefish ...