A viral video has sent the internet into a frenzy, claiming to show a massive sea monster lurking beneath the ocean—some say it's the legendary Leviathan! But is it real?

The skull of the ocean-dwelling pliosaur is longer than most humans are tall, one of the biggest discoveries of its kind.

The marine photographer who captured the footage said it could be the world's first recorded sighting of a black seadevil alive in broad daylight near the ocean surface.

Deep sea scientists lowered a robot down to the ocean depths to reveal diverse life and new species thriving on seamounts in the Pacific Ocean.

The Portugese man-of-war, "flying spaghetti monster" and an "alien like" sea star are among the creatures to be seen off the ...

This ancient, armored sea monster snatched its marine prey with a formidable bite ... couldn’t have evolved without the ...

13 fact checks featuring real sea creatures you have to see to believe From the majestic glass octopus to the slimy giant horse conch, marine life can be fascinating.

The ocean is full of mystery, and these games imagine sinister terrors lurking beneath the waves.

Paleontology researchers in Europe have identified a new species of ancient marine reptile – often referred to as a "Jurassic sea monster" or "sea dragon" – that existed nearly 183 million ...

The "headless chicken monster" (Enypniastes eximia) is a swimming sea cucumber that was first filmed in 2017 in the Gulf of Mexico and has never before been seen so far south, scientists said.

Seeing this blockbuster again, on the 30th anniversary of its release, is to be reminded how important character and dialogue used to be, even in monster movies.