The sea is dark and full of terrors. There may or may not be water on Mars, but there are apparently Martians in the water. A fisherman is making waves after sharing footage of a bizarre, mystery sea ...

Footage has surfaced showing an estimated 1,000-pound ocean sunfish swimming off Tasmania, Australia, with a massive chunk missing from its tail section. Which begs the question, asked by the fishing ...

Ghosts, goblins, spiders, and wolves don't just show up in fairytales. Some deep-sea creatures are named after frightening or mythical creatures thanks to their eerie appearances. However, strange ...

The vast majority of the ocean is unexplored, unmapped and unobserved by human eyes. As researchers explore the vast ecosystems under the waves, odd creatures emerge from hidden nooks and crevices.

FORT LAUDERDALE, Fla. – Researcher Leonid Moroz emerges from a dive off the Florida Keys and gleefully displays a plastic bag holding a creature that shimmers like an opal in the seawater. This ...

Everything really is bigger - and stranger - in Texas. This year proved the Lone Star State is full of wild surprises after several Texans spotted some rare and unusual encounters with sea creatures ...

In a remarkable encounter filmed at more than 3,700 feet below the surface of the Indian Ocean, a deep-sea creature resembling an alien glyph has captivated millions online. The footage shows the ...

Dive into the depths of the ocean to discover seven rare deep-sea creatures so strange and elusive, you won't believe they exist.

More than 500 million years ago, something in the ocean changed. Some creatures evolved to build their own hard-shelled exterior. Others grew to sizes never seen before as the amount of oxygen on the ...

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 ...