Sai Kung resident Rob Arrow with a porpoise he found washed up on the beach in Sheung Sze Wan. The one-metre finless dolphin was found early yesterday morning. Its head had been injured and some of its skin had peeled off. The mammal had originally been misidentified as a baby whale but the Agriculture, Fisheries and Conservation Department later confirmed it was a finless porpoise, common in Hong Kong waters.