The Greenpeace ship Arctic Sunrise has been at the Saya de Malha Bank in the Indian Ocean to map and research the wildlife of the region with an international team of scientists. The Saya be Malha Bank is the world’s largest seagrass meadow. With the help of binoculars and hydrophones, they’ve been looking for whales, sharks, seabirds and turtles – with a very slim prospect of also seeing a dugong. Seagrass meadows Seagrass meadows cover less than 0.2% of the world's seabed, but take up approximately 10% of the carbon buried in ocean sediment each year. On one hectare, seagrasses can store up to twice as much carbon as forests on land.