A mischievous sea cucumber and 56 other newly discovered marine species are making a splash in the South Atlantic Ocean. The ...

To survive the deep ocean, sea creatures have all kinds of adaptations that give them alien-like appearances, such as huge eyes and needle-like teeth.

You don't need to worry about the critters coming after you, since they're only a fraction of an inch across. They join the ...

More than 5,000 animal species previously unknown to science live in a pristine part of the deep sea. Their home — called the Clarion-Clipperton Zone — sits in the central and eastern Pacific Ocean ...

Scientists discovered two strange new sea spider species in the Salish Sea, including a hairy-legged, red-eyed species that ...

Animals come in an extraordinary range of body shapes. A starfish looks nothing like an earthworm, a mouse, or a human. Yet even closely related species can appear radically different: corals, ...

From sharks that don’t hunt other sea creatures to slugs that can photosynthesize, here are some of the rarest marine animals that may surprise you. Helmet Jellyfish: With a helmet-shaped bell and ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Heatwaves can have a devastating impact on some marine predators such ...