HOBART – More pilot whales were found stranded on an Australian coast Wednesday, raising the total to almost 500 in the largest mass stranding ever recorded in the island state of Tasmania.Authorities have been working to rescue survivors among an estimated 270 whales found on Monday on a beach and two sand bars near the remote west coast town of Strahan.Another 200 stranded whales were spotted from the air on Wednesday less than 10 kilometers (6 miles) to the south, Tasmania Parks and Wildlife Service Manager Nic Deka said.“From the air, they didn’t look to be in a condition that would warrant rescue,” Deka said. “Most of them appeared to be dead.”Further assessment of their condition would be made by boat and crews would be sent if the.