'Thousands and thousands' of these curious creatures have been showing up on the Texas shoreline, expert says. What are they?

Far below the reach of sunlight, a strange predator drifts through the water like a living ghost train, its body stretching for tens of meters while millions of tiny mouths wait for something to ...

The Portuguese man o’ war is one of the ocean’s strangest creatures, and its danger comes from what it really is, not what it ...

In July and August scientists onboard the Schmidt Ocean Institute’s research vessel Falkor (too) spotted the oddities through the eyes of an underwater robot as they explored the Mar del Plata Canyon.

The Abdopus octopus is found in intertidal zones along the Northern Australian coastline. Rather than being restricted to ...

Sea creatures have adapted to help them thrive in extreme environments. Unusual features allow them to live thousands of feet below the surface. Underwater robots give researchers a glimpse at some of ...

A deep-sea fish species with unusual cheek patterns has been discovered in the South China Sea after it was listed on online seafood markets. The fish has been named Branchiostegus sanae because its ...

What is an ocean quahog? How long do they live for? Nick Baker explains the secrets behind the world’s oldest ever animal ...

What are the blue blobs washing up on California beaches? What to know about these strange sea creatures. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

An entire world lives deep under the ocean’s surface, far from human notice and as bustling as any city. Animals such as tubeworms and clams live crowded around plumes of methane that bubble up ...

The anemone is part of a new species, genus and family, according to the study. Photo by Yanghong Yu via Unsplash A “strange” creature recorded in the deep waters off the coast of Japan represents an ...

The knotty sea spider, Pycnogonum litorale, is not actually a spider, but it does represent a significant early branch in the genetic family tree that includes spiders, as well as scorpions, ticks and ...