Deep water camera rig being deployed from the Esperanza, North Atlantic. Camera used to document the sea bed and the effects of bottom trawling. Bottom-trawling boats, the majority from EU countries, drag fishing gear weighing several tonnes across the seabed, destroying marine wildlife and devastating life on underwater mountains - or 'seamounts'. Greenpeace ship Esperanza tours Atlantic waters searching for and intercepting bottom trawling fishing vessels during a campaign to highlight the destruction caused by this controversial form of fishing.