Thai Union, one of the world's largest seafood conglomerates, said Tuesday it will overhaul its fishing practices to protect against labour abuses and unsustainable trawling, a move hailed by Greenpeace as "huge progress". The Thai food giant -- which owns major global brands such as Chicken of the Sea, John West and Petit Navire -- has long been a bete noire to those campaigning against overfishing and abusive working conditions on boats. "This marks huge progress for our oceans and marine life and for the rights of people working in the seafood industry," Greenpeace International Executive Director Bunny McDiarmid said in the statement.