Some of the most bizarre lifeforms on Earth lurk in the deeper realms of the ocean. There was so little known about one of these creatures that it took 20 years just to figure out what exactly it was.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. In a fascinating video, researchers have revealed a new and bizarre see ...

Nudibranchs are often referred to as the butterflies of the sea. Nudibranchs live worldwide, primarily in warm, shallow marine regions, and stand out for their flamboyant colors and diverse shapes. A ...

Biologists from Hong Kong Baptist University (HKBU) have discovered in Hong Kong waters a new species of hard coral and two new species of nudibranch, a type of marine mollusc, that have never been ...

New UCLA research indicates that an evolutionary phenomenon never before observed among marine life could help explain why there is such immense biodiversity in the world’s coral reefs and the ocean ...

I never really understood the motivation behind geocaching, the recreational activity in which hobbyists locate hidden treasures using GPS. It seemed like a lot of effort for a tiny reward. Then I ...

Tsukuba, Japan—Nudibranchs are members of the phylum Mollusca, and most species have a planktonic larval stage characterized by the presence of shells immediately after hatching. During development, ...

From an ecological perspective, our oceans are as special as our land. Seawater makes up more than 70 percent of the Earth’s surface. Oceans teem with an enormous variety of animal groups poorly known ...

Q. I enjoy learning about bizarre animals like the terrestrial one you recently wrote about called a hammerhead worm. With all the strange animals found on land, the oceans must be full of even more ...