Dennis Kim , associate professor of biology at MIT, spends his days carefully raising worms that are no bigger than a comma. The students in his lab feed them, watching them grow and multiply on petri ...

COURTESY BOB LEINAU Cone snail shell with worm holes. Another borer that really is a worm is the bone-eating snot flower, a gelatinous creature with plume-bearing gills and rootlike tendrils that ...

A woman says strange green worm-like critters emerged from a sea shell she found in Myrtle Beach, South Carolina. Screengrab from Facebook post by Angela York Kracht. “Dozens and dozens” of green worm ...

Hermit crabs move into other animals’ discarded shells as shelter, because the ocean is a treacherous place, full of hungry predators. Half a billion years ago, another creature evolved the same ...

Hermit crabs have been taking shelter in abandoned shells for millions of years, but scientists now have evidence suggesting that the “hermit” lifestyle has existed far longer than that. Besides ...

The Cambrian period (543 million to 490 million years ago) brought the first great explosion of biodiversity to Earth, with the ancestors of practically all modern animals first appearing. One of the ...

To protect their vulnerable, soft bodies, hermit crabs have to scavenge for shelter—usually they nestle into a discarded shell, or something more creative like a doll head or a Lego. Scientists ...