Greenpeace project "Ticking Time Bomb' onto an iceberg as a transhipment is seen in the background, at the South Orkney Islands, Antarctica.

The Greenpeace ship Esperanza is on the final leg of the 'Protect The Oceans' voyage from the Arctic to the Antarctic. The almost year-long voyage is one of Greenpeace’s biggest ever expeditions and highlights the many threats facing the oceans while campaigning for a Global Ocean Treaty covering all seas outside of national waters.