Known as Dalhousiella yabukii, the worm resides inside a glass sea sponge—a simple marine animal that forms a glass-like skeleton—in the cold, dark waters off the coast of Japan. And it’s just one of ...

The ocean is full of some incredibly odd creatures. It feels like the further you go down, the stranger and more alien-like they become. With so many interesting creatures, it makes you wonder, what ...

Glittery sea worms and sea squirts fit for "The Lord of the Rings" universe might sound like pure fantasy, but they're very real creatures living in the deep sea. Some of these otherworldly ocean ...

Add Yahoo as a preferred source to see more of our stories on Google. Far below the ocean’s surface, where sunlight can’t reach, some of the most unusual creatures on Earth thrive in complete darkness ...

From deep sea ghost sharks to symbiotic worms and unusual crustaceans, scientists have identified 1,121 new marine species in a single year through the Ocean Census initiative.

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. Beneath the neon lights of a laser-scanning microscope, newly classified species glow ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

So it’s surprising that this species in the phylum Cnidarians (along with jellyfish, corals, and other sea creatures) contains an ancient blueprint for bilaterians, of which Homo sapiens are a ...