Atlantic bottlenose dolphin (Tursiops truncatus), in training using only echolocation, Netherlands Antilles, Caribbean, Central America

Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Snow Pass, Alaska, United States of America, North America

Adult bull killer whale (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

Adult Commerson's dolphin (Cephalorhynchus commersonii), surfacing in Stanley Harbor in the Falkland Islands, South America

An adult Pacific white-sided dolphin (Lagenorhynchus obliquidens) leaping in Johnstone Strait, British Columbia, Canada

A pod of Pacific white-sided dolphins (Lagenorhynchus obliquidens) bow-riding in Johnstone Strait, British Columbia, Canada

Adult Peale's Dolphin (Lagenorhynchus australis), bow-riding near New Island in the Falkland Islands, South America

Bull southern elephant seal (Mirounga leonina) issuing a bellowing challenge at Gold Harbour on South Georgia Island, Polar Regions

Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Microbats constitute the suborder Microchiroptera, found in a sandstone crevice on Bigge Island, Kimberley, Western Australia, Australia, Pacific

A juvenile killer whale (Orcinus orca) head-lunging in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

King penguin (Aptenodytes patagonicus) detail at breeding and nesting colony at St. Andrews Bay on South Georgia, Southern Ocean, Polar Regions

Adult Weddell seal (Leptonychotes weddellii) hauled out on ice near the Antarctic Peninsula, Southern Ocean, Polar Regions

Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Microbats constitute the suborder Microchiroptera, found in a sandstone crevice on Bigge Island, Kimberley, Western Australia, Australia, Pacific

Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)

Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)

Spinner dolphin, Stenella longirostris, Namu atoll, Marshall Islands (N. Pacific).MID0042