Australia is the sixth largest country in the world. It's about the same size as the 48 mainland states of the USA and 50 per cent larger than Europe, but has the lowest population density in the world - only two people per square kilometre.
Just another Nudibranch found on North Wall out from Portsea. (Ceratosoma brevicaudatum very southern species, seen up to about the Nelson Bay area. - Akos)
I found this Nudibranch at North Wall out from Portsea, Victoria. ID please. (Chromodoris sp. - Akos)
by marty olson
Taken at Christmas Island in Flying Fish Cove on a night dive.
by John Natoli
The attached image of a grey nurse shark was taken at Underwater World, Mooloolaba on a shark dive, a great place where one can get up close and personal with this fabulous animal.
Dwarf Lionfish (Dendrochirus brachypterus) hiding in some sponges at Bare Island in Sydney. Taken with a Sea & Sea DX3000 using the internal flash.
Nudibranch taken at Fly Point, Nelson Bay. Can anyone please identify this one for me, please -> Nembrotha Rutilans, common name Red Gilled Nembrotha (Glen Poole)
by Matti
Gold-Spotted Halgerda (Nudibranch) under a ledge at Lady Musgrave,Sony P10, Inon D180
by Matti
Decorated Reticulidia (Nudibranch) under a ledge at Lady Musgrave,Sony P10, Inon D180
by Matti
Gorgonian Coral on a drop-off at Lady Musgrave, Sony P10, Sea & Sea 16mm Wide Angle Lens, Inon D180