Tourists on elephant back sighting rhino, Chitwan National Park, Nepal

A very rare sighting of Type D (sub-Antarctic) killer whales (Orcinus orca), in the Drake Passage, Antarctica, Polar Regions

A very rare sighting of Type D (sub-Antarctic) killer whales (Orcinus orca) in the Drake Passage, Antarctica, Polar Regions

A rare sighting of an adult female sea otter (Enhydra lutris kenyoni) hauled out on land in Inian Pass, Southeastern Alaska, Pacific Ocean, United States of America, North America

A very rare sighting of an adult Blue Whale (Balaenoptera musculus) surfacing in the Svalbard Archipelago, Norway, Arctic, Europe

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

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

An adult rough-scaled python (Morelia carinata), found in a sandstone crevice on Bigge Island, Kimberley, Western Australia, Australia, Pacific

A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions

Tourists watch female Bengal tiger, Panthera tigris tigris, in Ranthambore National Park, Rajasthan, India

A sighting of adult sei whales (Balaenoptera borealis) in the Drake Passage, Southern Ocean

A rare sighting of a lone adult king penguin (Aptenodytes patagonicus), Barrentos Island, South Shetland Islands, Antarctica, Southern Ocean

Leopard Seal, Hydrurga leptonyx, more commonly seen hauled out on ice further South, this is a rare sighting on a South Georgia beach, South Atlantic Ocean

A very rare sighting of an adult blue Whale (Balaenoptera musculus) flukes-up dive off the northwestern side of Spitsbergen Island in the Svalbard Archipelago, Barents Sea, Norway

A very rare sighting of an adult blue Whale (Balaenoptera musculus) flukes-up dive off the northwestern side of Spitsbergen Island in the Svalbard Archipelago, Barents Sea, Norway

A sighting of adult sei whales (Balaenoptera borealis) in the Drake Passage, Southern Ocean

A rare sighting of a lone adult king penguin (Aptenodytes patagonicus), Barrentos Island, South Shetland Islands, Antarctica, Southern Ocean

A sighting of adult sei whales (Balaenoptera borealis) in the Drake Passage, Southern Ocean

A very rare sighting of an adult blue Whale (Balaenoptera musculus) flukes-up dive off the northwestern side of Spitsbergen Island in the Svalbard Archipelago, Barents Sea, Norway

A very rare sighting of an adult blue Whale (Balaenoptera musculus) sub-surface feeding, Spitsbergen Island in the Svalbard Archipelago, Barents Sea, Norway

A rare sighting of a lone adult king penguin (Aptenodytes patagonicus), Barrentos Island, South Shetland Islands, Antarctica, Southern Ocean

A very rare sighting of an adult blue Whale (Balaenoptera musculus) sub-surface feeding, Spitsbergen Island in the Svalbard Archipelago, Barents Sea, Norway

A very rare sighting of an adult blue Whale (Balaenoptera musculus) flukes-up dive off the northwestern side of Spitsbergen Island in the Svalbard Archipelago, Barents Sea, Norway

A rare sighting of an adult blue Whale (Balaenoptera musculus) sub-surface, Spitsbergen, Norway

A rare sighting of an adult blue Whale (Balaenoptera musculus) sub-surface, Spitsbergen, Norway