This shot of densely packed jellyfish is about two metres square. Taken in a bay on the island of Ios in Greece.
Large Soft Tree Coral (Dendronephthya rubeola) against the sun, Jessie Beazley Reef, Sulu Sea, Palawan, Philippines.
Pinochio, unicorn fish, Red Sea
Wolfish head on
Shark in midwater with Remora attached, Carcharhinidae, Requiem sharks, Bahamas
Manatee full face
Bottlenose Dolphin swimming