Dr. Sandra Brooke, Director of Coral Conservations at the Marine Conservation Biology Institute and Greenpeace Oceans Campaign Director John Hocevar ascend in the Dual Deep Worker submarine from the Gulf of Mexico. A team of independent scientists joined the crew of the Arctic Sunrise to conduct a series of scientific research programs that will further the understanding of the impacts of both oil and chemical dispersant on the Gulf ecosystem in the aftermath of the British Petroleum oil spill.