High tides and rough seas washed a dead 30-ton humpback whale measuring 33 feet in length into a seaside pool in Sydney on Wednesday, leaving authorities bewildered as to how to dispose of the carcass. Wildlife officials said the young humpback likely died just a few days ago from a respiratory infection. Before any plan could be put into action, high tide floated the carcass back over the barrier and out to sea. The National Parks and Wildlife Service had considered cutting the whale into chunks and then removing them by truck. However, they decided to give the tide a chance because the dismembering would likely attract sharks to the beach. Officials will wait until Thursday morning to attempt to locate the carcass and reassess any removal effort.