Depths of the sea

A Japanese Spider Crab lurks in the darkness

Mystery Seabed Circles - Discovered off the coast of Japan, this mysterious pattern in the sea floor intrigued many. It was, however, found to simply be the work of a male pufferfish, which created the pattern to attract females to lay their eggs in the center, where the ridges in the sand offer protection from the currents.

Deep-Sea Warty Octopus (Graneledone Taniwha Taniwha): a small species of octopus found in the waters of New Zealand, dwelling up to 1500m deep

Shoal of feeding Indian Mackerel 

Deep sea Chimaera

The song of the Humpback whale may last 24 hours, or more.

Humpback whale and calf

Orca tail

Ricordea - A type of mushroom coral

Long spined sea urchin (top down)

Lion nudibranch

Black dorid