Killer whale pod (Orcinus orca), beside tourists in inflatables off Punta Colorada, Isla San Jose, Baja California Sur, Mexico, North America

Views of the Trinity Church at Belingshausen Russian Research Station, Antarctica, Southern Ocean, Polar Regions

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour in LeMaire Channel on the western side of the Antarctic Peninsula

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour in LeMaire Channel on the western side of the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour in LeMaire Channel on the western side of the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour doing various things in and around the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour doing various things in and around the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour doing various things in and around the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour doing various things in and around the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour in LeMaire Channel on the western side of the Antarctic Peninsula

Natural history staff from the Lindblad Expedition ship National Geographic Endeavour doing various things in and around the Antarctic Peninsula

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

Person with a safety suit in a forest area. Ayegui, Navarre, Spain, Europe

Person with a safety suit lying down in a flowers carpet in a forest area. Ayegui, Navarre, Spain, Europe

Person with a safety suit in a forest area. Ayegui, Navarre, Spain, Europe

Queenscliff Centre, Marine Research Facility, Victoria, Australia, Pacific

Queenscliff Centre, Marine Research Facility, Victoria, Australia, Pacific

Research divers from the MOC Marine Institute glue broken coral heads back together and map out coral damage at Molokini Marine Preserve off the island of Maui, Hawaii. In the future, data from here will help to determine the health of Hawaii's reefs, Maui, Hawaii, United States of America

Research divers from the MOC Marine Institute map out coral damage at Molokini Marine Preserve off the island of Maui, Hawaii. In the future, data from here will help to determine the health of Hawaii's reefs, Maui, Hawaii, United States of America

A research diver from the MOC Marine Institute glues broken coral back together at Molokini Marine Preserve off the island of Maui, Hawaii. The coral is tagged and will be monitored, Maui, Hawaii, United States of America