Oarfish look like giant seafish and can grow up to 36 feet long!
The reason is more sinister than you may imagine.
Red starfish, nemertine worms and sea urchins flourish under the Antarctic ice.
Sea snakes breed in underwater caves and have some of the most toxic venom in the world.
Octopuses live and breathe underwater, but that doesn’t stop the Australian Abdopus from roaming on land, too.
Watch the first-ever footage of an octopus using shell armor to hide from a shark!
It takes weeks underwater to find and film the fascinating animals of the deep.
One touch from this beautiful but deadly creature is enough to paralyze.
After reaching a certain body size, Kobudai fish can change from female to male!
Can this eel escape a toxic brine pool death trap at the bottom of the sea?
With an oversized left eye, this deep-sea squid can detect silhouettes of prey swimming above.