Manatees like fresh water. We use a canvas hose that stows on a reel for water chores…it leaks a bit. Today, when we filled our water tanks that leakage ran down the deck, and a young manatee decided to treat it as a private soda fountain. Look closely and you can see the water droplets. The manatee lay there on its back for the full time we were filling the tanks.
Then it hung around the boat for about an hour, We were playing Brazilian Jazz on the stereo, and in the cuts with more bass, the manatee would move up to the part of the hull where our sub-woofer is mounted. All three of us enjoyed the afternoon.