The fishery is regulated but experts say it is wrecking the food chain. Gordon Peake joined a Sea Shepherd mission to observe the giant ships compete for catchIt is bitterly cold on the deck of the Allankay and the bosun, Luca Massari, is checking that none of us are wearing contact lenses before we descend into Antarctic waters. There is a risk, he warns, that lenses will freeze solid over the eyes. Massari himself is prepared for his surroundings. He is wearing thick goggles that make him look like an Olympic ski jumper.Massari is a burly, heavily tattooed veteran of the environmental organisation Sea Shepherd, which campaigns against exploitating the oceans. His deck team are preparing to launch the ship’s small boat, which Massari will helm. Eight of us are bundled in bright red dry suits, helmets and lifejackets; the average time to survive hypothermia in this wind-whipped water is just five minutes.The Allankay sailed to Coronation Island from New Zealand to document the krill fi...