Close-up of a female stolon–one of the independent reproductive units–from the worm Ramisyllis kingghidorahi. It has already ...

In the crystalline waters off the coast of Indonesia, an “unusual” freckled creature swam near a large sea sponge. Its bright eyes scanned the surrounding reef and the diver hovering nearby.

Scientists have uncovered the genetic underpinnings of one of the ocean's most bizarre animals: a branching marine worm named ...

Thousands of feet below the surface of the Indian Ocean, a reddish sea creature with “massive eyes” used its “long” arms to move through the water. Something approached the deep-sea animals, caught it ...

Among the potentially new-to-science marine life are ghostly white sponges and lobsters with beady eyes and barbed legs, in addition to corals, urchins, sea stars and sea lilies. The team explored ...

Glass sponges are found along the deep sea ... Here are three of our most recent eye-catching stories. → 6-foot-long sea creature — with 'sharp' snout — discovered as new species in Colombia ...

At first glance, the simple sea sponge is no creature of mystery ... inducted into the National Academy of Sciences, first laid eyes on the fossil five years ago, when a collaborator texted ...