Dr Susanne Lockhart from the California Academy of Sciences and John Hocevar (not seen in the photo), Oceans Campaign Director for Greenpeace USA and submersible pilot, as the sub is lowered into the water, for a dive off Half Moon Island, Antarctica.

The Greenpeace ship Arctic Sunrise has returned to the Antarctic Peninsula with scientists Susanne Lockhart and Rachel Downey for a series of dives with a submersible to explore the sea floor. Greenpeace is conducting scientific research and documenting the Antarctic’s unique wildlife, to strengthen the proposal to create the largest protected area on the planet, an Antarctic Ocean Sanctuary.