Elephant sharks, aka Australian ghost sharks, aren’t really sharks at all. They actually belong to a prehistoric group of fish called ratfish, which diverged from sharks about 400 million years ago.

Move over, coelacanth. No longer is this extremely rare order of ancient fish crowned the slowest evolving vertebrate animal in the world. That honor now goes to the elephant shark, whose freshly ...

Akira Ota holds the fossil of what was determined to be a new fish species, after commenting, "I was excited when I thought it might be a new species," at the Hobetsu Museum in the town of Mukawa, ...