Yellow Crowned Night Heron (Nyctanassa Violacea), wading bird of the Americas that feeds on crustacea, Bermuda, Atlantic

Dunes at Souss-Massa National Park, Atlantic coast, Morocco

Common guillemots (Uria aalge), along the northern coast of Norway

Adult Eurasian Wigeon (Anas penelope) in breeding plumage on Lake Myvatn, Iceland

Adult red-necked phalarope (Phalaropus lobatus) in breeding plumage on Flatey Island, Iceland

Lava lizard (Microlophus spp) in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

Southern elephant seal (Mirounga leonina) weaner pups mock fighting on the beach at Gold Harbour, South Georgia Island, Polar Regions

Gentoo penguin (Pygoscelis papua) chicks covered with mud and guano on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

Coral reef of soft leather corals (Sarcophyton sp.) and limestone islands. Misool, Raja Ampat, Papua, Indonesia, Pacific Ocean. More info: This region has the highest marine biological diversity in the world.

Poppies and other wild flowers growing in a field in Andalucia, Spain, Europe

Wild flowers growing on a field verge in Andalucia, Spain, Europe

Crab preying on dead portuguese man-of-war, Physalia physalis, Praia do Forte, Bahia, Brazil (South Atlantic)

Starry night octopus, Octopus luteus, foraging on coral reef at night, Malapascua, Cebu, Philippines, Visayan Sea.

Detail of toxic Crown-of-thorns starfish (Acanthaster planci), spines, crown of thorns, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Detail of dorsal fin, parrot fish (Scarus), Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Polyps of a mushroom coral (Fungiidae) Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Open coral polyps on the trunk of a soft coral (Dendronephthya), coral, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Underside with mouth of spiny cushion star (Culcita novaeguineae), Detail, Starfish, Pacific, Great Barrier Reef, Australia, Oceania

Slice anemone, Giant Cup Mushroom (Amplexidiscus fenestrafer), detail with mouth, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Colony of coral polyps in brain corallae (Physogyra lichtensteini), Pacific, Great Barrier Reef, UNESCO World Heritage Site, Australia, Oceania

Detail of Eye patch sea cucumber (Bohadschia argus), Pacific, Great Barrier Reef, Australia, Oceania

Open coral polyps on Mopsella sea fan (Mopsella) Pacific, Great Barrier Reef, UNESCO World Natural Heritage, Australia, Oceania

Limestone skeleton of the Klunzinger soft coral (Dendronephthya klunzingeri), Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Syphon of giant clam (Tridacna gigas), Clam meat, detail, pacifica, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Soft coral, leather coral (Lobophytum) with semi-enclosed polyps, detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Graphic structure on underside of Red Pillow Starfish (Halithyle regularis), detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

Detail of Forsskal's Pleurobranch (Pleurobranchus forskalii), Backshielded Snail, Nudibranch, Detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania