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

Evolution has turned out bizarre and baffling creatures, such as walking fish. It only gets weirder from there. Some of these fish not only walk on the seafloor, but use their leg-like appendages to ...

Something very freaky is lurking in the deep waters off the California coast. Researchers aboard a deep sea vessel spotted a barreleye fish and captured the rare sighting on video. The bizarre-looking ...

We may receive a commission on purchases made from links. Alligator gar are a bizarre freshwater fish. Typically described as prehistoric due to the fact they have changed so little over millennia, ...

A mysterious ailment causing fish in the Florida Keys to spin in circles has touched off a frantic race to find the cause and save an endangered species before it’s too late. Eight months into ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Researchers on an ...