Halalaimus is a microscopic nematode genus commonly found in sediment on the seafloor. It lives 1–5 cm below the sediment ...

A spherical sea sponge discovered in Antarctica, Carnivorous cladorhizid, is a carnivore, trapping and devouring live animals.

When most of us picture the ocean, we imagine turquoise waves, colorful reefs, and shoals of darting fish. But that’s only the surface. Venture deeper, far below the last reach of sunlight, and you ...

Many animals that live in water need to come up to the surface to breathe, but they can still spend impressive lengths of time submerged thanks to a few clever tricks. When you purchase through links ...

Sea urchin stings are painful, but rarely deadly. Learn when venom is dangerous, which species are worst, and what to do if stung.

Humans may count themselves lucky to reach 100, but some creatures have lifespans that make centuries look like a weekend. In the ocean’s depths and the world’s quiet corners, a handful of species ...

Sea Otter Awareness Week is celebrated annually from September 21 to September 27 to highlight not only why the keystone marine mammal needs to continue to be protected, but also the threats the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Although the apple ...

Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in ...

Discover seven fascinating animals that can’t survive in sunlight. Learn how these cave-dwellers and deep-sea creatures are ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Fast animals get plenty of attention for their incredible feats of speed. But what about animals ...