>> she said to me, mindy kendall's horse is going to die. and i was like, what? >> william actually belongs to mindy's 14-year-old daughter kendall, who just got him a few months ago and witnesses him swim away. >> you know, horses can swim, but they're not great swimmers. that's not their forte. that's for fish. >> i thought, well, there are sharks, and i knew this great white shark was in this area two days before and attacked a kayak. >> william is getting farther and farther away, eventually swimming out of view from everyone on shore. local water rescue agencies are notified of william's predicament and several watercraft are dispatched to search for the elusive arabian sea horse. santa barbara harbor patrol officer ryan kelly is part of the search team. >> in order to find him, it was just a matter of taking conditions into account and start a search pattern like for a man overboard. >> two hours pass and william is still lost at sea.