Scientists in the South China Sea scooped up some muck, sifted through it and found the “rarely encountered” animal. Take a ...

"In each burrow move, the animal disappears from view by retreating into its burrow, then a small mound appears a short ...

The method worked, and the team found several unusual-looking marine worms. Researchers took a closer look at the sea worms and quickly realized they’d discovered a new species: Sclerobregma ...

What lives off the Northwest coasts of Spain and shrinks to one-fifth of its size when alarmed? Enter the accordion worm.