just wondering about the water temps in the winter. how cold does the water get to be able to get in the water with the manatees or do you have to wear a dive suit? whatis this about hot springs in kings bay? do you HAVE to go through a company to swim with the manatees? i saw there is a protective period? whats that about? has a manatee ever attacked anyone like over a calf or for any reason? can you touch them?