As manatees can’t survive in water below 60 degrees, they migrate to Kings Bay and the adjacent rivers every winter, which are an average 72 degrees all year round. Crystal River is 70 miles north of Tampa, the epicenter of manatee-watching.
Giola Lagoon/Thassos-Greece The Giola is a beautiful natural lagoon, like a swimming pool carved into the rocks. The water is warmer than the sea, which makes it pleasant for swimming. The place is unknown and the access there is difficult.