Adult great blue heron (Ardea herodias cognata) feeding on green sea turtle hatchlings, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult female leopard seal (Hydrurga leptonyx) killing and eating a juvenile Adelie penguin at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

Adult female leopard seal (Hydrurga leptonyx) killing and eating a juvenile Adelie penguin at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

Adult male leopard seal (Hydrurga leptonyx) hauled out on ice in the Gullet near the Antarctic Peninsula, Antarctica, Polar Regions

Crabeater seal (Lobodon carcinophaga) hauled out on ice floe in Neko Harbor near the Antarctic Peninsula, Antarctica, Polar Regions

A mother polar bear (Ursus maritimus), and cub of the year leaving a fin whale carcass in Holmabukta in the Svalbard Archipelago, Norway

A mother polar bear (Ursus maritimus), and cub of the year feeding on a fin whale carcass in Holmabukta in the Svalbard Archipelago, Norway

A mother polar bear (Ursus maritimus), with cub of the year feeding on a fin whale carcass in Holmabukta, Svalbard, Norway

Antarctic tern (Sterna vittata), feeding in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions

An adult polar bear (Ursus maritimus) leaping from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

An adult polar bear (Ursus maritimus) leaping from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

Adult gentoo penguin (Pygoscelis papua), porpoising for swimming speed near the Antarctic Peninsula, Southern Ocean, Polar Regions

An adult polar bear (Ursus maritimus) traveling from ice floe to ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

Adult Nazca booby (Sula grantii) feeding on halfbeak, and defending its catch against a frigatebird, in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Antarctic tern (Sterna vittata) in brash ice near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

Adult male polar bear (Ursus maritimus), on multi-year ice floes off the eastern coast of Spitsbergen in the Svalbard, Norway

Young polar bear (Ursus maritimus), feeding on a fresh bearded seal kill near Monacobreen Glacier, Spitsbergen, Svalbard, Norway

Young male polar bear (Ursus maritimus), shaking its fur, feeding on a fin whale carcass in Holmabukta in Svalbard, Norway

Young male polar bear (Ursus maritimus), feeding on a fin whale carcass in Holmabukta in the Svalbard Archipelago, Norway

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