Sharks might not be a natural biological group, with most species potentially closer kin to rays than to an oddball group of sharks.

Keep your eyes on the ocean, because something is coming. Sharkfest returns to National Geographic this summer with over 25 hours of shark-centered programming. The summer shark event kicks off July 5 ...

Here’s what you’ll learn when you read this story: Sharks are older than a surprising amount of things, both on Earth and in the rest of the universe. While sharks have seen evolutionary changes in ...

Older than dinosaurs and trees, sharks have endured a lot throughout their 450 million years on Earth. They’ve even survived five mass extinctions, including the asteroid that wiped out 75% of life on ...

Researchers remark that the anatomy of this flatworm, preserved in amber for 99 million years, bears a remarkable resemblance to modern flatworms inhabiting shark intestines. Nearly 100 million years ...

During its lifetime nearly 100 million years ago, a newfound parasitic worm likely made its home in the bellies of fish. So how one ended up preserved in amber, fossilized tree resin, has ...