Greenpeace activists with protest banners on board the EU deep-sea bottom trawler Playa de Menduina, fishing in the North Atlantic. Activists protest against the destruction caused by this controversial fishing practice. Bottom-trawling boats, the majority from EU countries, drag fishing gear weighing several tonnes across the sea bed, destroying marine wildlife and devastating life on underwater mountains - or 'seamounts'. Greenpeace is demanding a UN moratorium on bottom trawling on the high seas.