They mainly eat insects, mollusks and marine worms, also some plant material.

One dark stomach was banana-shaped, perhaps holding a marine worm.

These species are vermivorous (meaning that they prey on marine worms).

Paleontologists have learned that the modern earthworms were preceded by marine worms.

Heme S is found in the hemoglobin of marine worms.

They have a liking for crabs, but will also eat insects and marine worms.

The other species hunt and eat marine worms or mollusks.

These support a biodiverse community of fish, shellfish, marine worms and other invertebrates.

Echiurans are marine worms similar in size and habit to sipunculans.

It feeds on crustaceans, marine worms, small fish and cephalopods.