These spheres from the abyss conceal creatures with startling biology.

Sightings of these peculiar fish have become more frequent in UK waters in recent years, possibly linked to warming sea ...

Teetering near endangered status, the starlet sea anemone produces “an ancient mechanism” for fighting viruses that ...

Lionfish, mitten crabs and “sea vomit.” Meet eight marine species inadvertently brought to new territory that are taking the ...

Imagine finding hundreds of alligators living happily in Colorado, which is thousands of miles away from any natural swamp.

Footage shows paper nautilus moving its tentacles from inside its shell and gazing through one of its eyes.

A research expedition off the coast of Brazil has documented more than 30 new deep-sea species, from translucent worms to ...

These real-life ocean animals were so terrifying to seafarers that they became embedded in history as legendary sea monsters ...

Their danger predominantly lies in their ability to totally disguise themselves on the seabed, and unsuspecting swimmers can ...