A strange and mesmerizing marine worm has recently gone viral online, and once you see it, you’ll understand why. This bizarre creature, known as Eulagisca gigantea, looks like it belongs in a sci-fi ...

About 500 million years ago, the Grand Canyon was a great sea, and among the creatures it harbored was a newly discovered type of penis worm, armed with many rings of teeth. Penis worms are marine ...

Scientists found the 500-million-year-old fossil of a "penis worm" in the Grand Canyon—and reconstructed how the creature would have used its strange mouth to feed. The newly discovered species of ...

Deep-sea worms feast on the teeth of dead sharks that fall to the seafloor. These worms were previously known to eat whale bones and the remains of bony fish, but when those are scarce, shark teeth ...