Ribbed compartments on the surface of a hard Brain Coral, Platygyra crosslandi, on a tropical reef. Shallow depth of field A scientist uses a harpoon

A scientist uses a harpoon to collect a Whale Shark DNA tissue sample

The delicate tendrils of a Crinoid Featherstar wave through the water

The exoskeleton of a southern rock lobster's legs and claws

Endangered Northern Hairy-Nosed Wombat foot prints on a sandy track

A man in a straw sun hat wades the ocean shallows towards the beach

Ribbed compartments on the surface of a hard Brain Coral, Platygyra crosslandi, on a tropical reef. Shallow depth of field A scientist uses a harpoonRibbed compartments on the surface of a hard Brain Coral, Platygyra crosslandi, on a tropical reef. Bwejuu, Baobab Reef, Unguja Island, Zanzibar, Tanzania.