The sarcastic fringehead might be a small breed, but it is also known to be extremely aggressive—even toward its own kind.

Frogfish are some of the most colorful creatures under the sea — and some of the most unique, too. They look more like frogs than fish with their leg-like fins and their quick-snapping jaws, but they ...

Imagine plunging into the ancient seas, only to come face to face with a creature so bizarre, it almost defies belief.