Mitsuaki Iwago / Cruise ship in storm, Antarctica

Norbert Wu / Humpback Whale (Megaptera novaeangliae) diving near coast with tourists watching, Antarctic Peninsula, Antarctica

Colin Monteath / Tourists sea kayaking near Enterprise Island, Gerlache Strait, Antarctic Peninsula, Antarctica

Colin Monteath / Climbers roped for glacier travel in case of crevasses, Mount Don Roberts, Lemaire Island, Paradise Bay behind, Antarctic Peninsula, Antarctica

Colin Monteath / Woman climber ice climbing on grounded iceberg with cruise ship passengers looking on, Pleneau Island, Antarctic Peninsula, Antarctica

Colin Monteath / Climbers descend Jabet Peak in blizzard above Port Lockroy, Wiencke Island, Antarctic Peninsula, Antarctica

Colin Monteath / Climbers roped for glacier travel during descent from Mount Don Roberts above Paradise Bay, Antarctic Peninsula, Antarctica

Colin Monteath / Kayakers paddling beneath Mount Scott at entrance to Lemaire Channel near Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Kayakers paddling beneath Mount Scott at entrance to Lemaire Channel near Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Climbers look down on kayakers and tourists in zodiacs, Enterprise Island, Gerlache Strait, Antarctic Peninsula, Antarctica

Flip Nicklin / Tourists checking out iceberg from inflatable boat from the Endeavour cruise ship, Antarctica

Suzi Eszterhas / Zodiac at face of glacier, Neko Harbor, Antarctica Peninsula, Antarctica

Colin Monteath / Climbers cross open crevasses on Fortuna Glacier retracing Sir Ernest Shackleton's epic crossing of South Georgia in 1916

Colin Monteath / Climber on the summit of Mt Shinn after the first ascent of the east ridge, Ellsworth Mountains, Antarctica

Colin Monteath / Mountain climber approaching summit of Vinson Massif, the highest peak in Antarctica, Ellsworth Mountains, Antarctica

Colin Monteath / Climbers on summit ridge of Mt Scott after climbing from sea level, Antarctic Peninsula, Antarctica

Norbert Wu / Passengers gather on the deck of the MV Amsterdam to view the stunning scenery of the Lemaire Channel, Palmer Station, Antarctic Peninsula, Antarctica

Colin Monteath / Climbers descend Peon Peak, Ronge Island, Antarctic Peninsula, Antarctica

Colin Monteath / Tourists cruise in inflatable boats, close to large iceberg arch, Enterprise Island, Antarctica Peninsula, Antarctica