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 ...

Researchers have discovered an otherworldly, 20-tentacled creature lurking in the freezing depths of the Antarctic Ocean. Resembling an alien or a Lovecraftian horror, the Antarctic strawberry feather ...

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 ...

Deep in the ocean, where sunlight never reaches, live some of Earth's strangest giants. Imagine a squid as long as a bus or a crab the size of a big plate! This is called deep-sea gigantism, where ...