Kirsten Thompson, Mariajo Caballero and Juliana Costa examine nautical charts as the Greenpeace vessel Arctic Sunrise passes by a large group of sperm whales on the Saya de Malha Bank in the Indian Oc...

Sunset from the Arctic Sunrise on the Saya de Malha Bank.

Sunset from the Greenpeace vessel Arctic Sunrise on the Saya de Malha Bank.

Sunset from the Greenpeace vessel Arctic Sunrise on the Saya de Malha Bank.

A porthole in the galley of the Greenpeace vessel Arctic Sunrise.

An underwater ROV departs from the Greenpeace vessel Arctic Sunrise during a trip to survey the Saya de Malha Bank.

Greenpeace vessel Arctic Sunrise's radio operator Kristana Srithanomwong prepares to lower an underwater ROV into the water while documenting the Saya de Malha Bank in the Indian Ocean.

Second mate Simona Stoeva on duty on the bridge of the Greenpeace vessel Arctic Sunrise in the Indian Ocean.

A crew member watches the sunset from the helideck of the Greenpeace vessel Arctic Sunrise in the Seychelles.

An underwater ROV departs from the Greenpeace vessel Arctic Sunrise during a trip to survey the Saya de Malha Bank.

Climate activist Shaama Sandooyea watches the sunset from the deck of the Greenpeace vessel Arctic Sunrise near the Seychelles.

Climate activist Shaama Sandooyea is photographed holding a sign in support of the climate strike during a visit of the Greenpeace vessel Arctic Sunrise to the Saya de Malha bank in the Indian Ocean.

Deckhad Yei Hsuan Huang cleans the mess after lunch on the Greenpeace vessel Arctic Sunrise.

First mate on the Greenpeace vessel Arctic Sunrise, Yeonsik Kim, notes down coordinates during a visit to the Saya de Malha Bank in the Indian Ocean.

Campaigner Dan Jones plays guitar after work on the Greenpeace vessel Arctic Sunrise, during an expedition to survey the Saya de Malha Bank in the Indian Ocean.