Very remote Shag Rocks, near South Georgia Island in the Scotia Sea, South Atlantic Ocean

An adult wild saltwater crocodile (Crocodylus porosus), on the banks of the Daintree River, Daintree rain forest, Queensland, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus), on the banks of the Daintree River, Daintree rain forest, Queensland, Australia, Pacific

Saltwater crocodile in Yellow Water billabong and wetland, Kakadu National Park, Northern Territory, Australia, Pacific

Red mangrove plants (Rhizophora mangle), at low tide near the Volivoli Resort grounds on Viti Levu, Fiji, South Pacific, Pacific

Red mangrove plants (Rhizophora mangle), at low tide near the Volivoli Resort grounds on Viti Levu, Fiji, South Pacific, Pacific

Soft corals and sponges underwater on Long Caye in the Mesoamerican Barrier Reef, Belize

Red mangrove plants (Rhizophora mangle), at low tide near the Volivoli Resort grounds on Viti Levu, Fiji, South Pacific, Pacific

Red mangrove plants (Rhizophora mangle), at low tide near the Volivoli Resort grounds on Viti Levu, Fiji, South Pacific, Pacific