Hostilities broke out between Japanese whalers and conservation group Sea Shepherd in the Antarctic yesterday, where the two sides collided in their first meeting since the sinking of the Ady Gil. The Sea Shepherd ship Bob Barker collided with the stern of the whale chaser Yushin Maru No. 3, leaving a metre-long gash in the side of the activists' vessel, the group's leader, Paul Watson, said last night.

He said the Bob Barker had been in close pursuit of the whaling factory ship Nisshin Maru but was being circled by four other vessels of the fleet. Despite the damage, the 1200- tonne Bob Barker was keeping up its pursuit of the Nisshin Maru, which was headed towards the coast of the Australian Antarctic Territory, about 200 kilometres east of Australia's Mawson station.