(L-R) Will McCallum, Head of Oceans Campaign Greenpeace UK, John Sauven, Executive Director of Greenpeace UK, Bunny McDiarmid, Executive Director of Greenpeace, Princess Marie-Esméralda of Belgium, and Callum Roberts, author of the report '30x30: A Blueprint for Ocean Protection', pictured during the launch of the report at the City Hall, London.
The event is also to kick start one of Greenpeace's biggest ever expeditions: an almost year-long pole to pole voyage from the Arctic to the Antarctic, to highlight the many threats facing the oceans and to campaign for a Global Ocean Treaty covering all seas outside of national waters.
The 'Protect the Oceans' expedition will see scientists and campaigners team up to research the threats of climate change, overfishing, plastic pollution, deep sea mining and oil drilling
The expedition will visit many of the areas identified as in need of protection by the groundbreaking academic study '30x30: A Blueprint for Ocean Protection'.