A Japanese crew member holds up some dried sharks fins on the deck of the legal Japanese longliner 'Keisei Maru No53', at sea in Micronesian waters. Sharks, turtles and seabirds are often caught up as unfortunate victims, or by-catch, of longline vessels. Yellow Fin and Big Eye tuna stocks in the Central and Western Pacific are destined to be critically over-fished within three years if the relentless fishing of the two Tuna species continues at current rates. Greenpeace are calling for an immediate end to pirate fishing, a 50% reduction in the amount of Pacific tuna caught, and a global network of Marine Reserves. The Greenpeace vessel 'MY Esperanza' is on the Pacific Leg of the Greenpeace 'Defending Our Oceans' global expedition.