Staghorn coral, Acropora humilis? This species forms interlocking branches to shelters small fish, molluscs and other invertebrates from predators. The photo taken in Milne Bay Province, Papua New Guinea.

Blue-spotted Stingray (Taeniura lymma) found in shallow waters throughout Papua New Guinea. Its tail is venomous but usually isn't deadly unless whips the chest or any central blood veins. One example would be Mr. Steve Erwin (late). The photo below was taken at Nuakata Island, Milne Bay Province, Papua New Guinea..

Blue-spotted Stingray - Taeniura lymma

A Green turtle (Chelonia mydas) is a large sea turtle of the family Cheloniidae. This species is one of the endangered species in the IUCN and CITIES. The picture below was taken during a dive a Rai Coast, Madang Province, Papua New Guinea.

Green Turtle - Chelonia mydas

This Octopus species was found in Daru Island, Western Province of Papua New Guinea. This species and many others of its kind like cuttlefish usually change their color to blend with their surrounding. I was amazed this one did not conceal itself. This Octopus species could be a Octopus macropus.

Octopus micropus