On this adventure, Mark is heading back to Florida to attempt to find a legendary spring that is said to be one of the last strongholds of the Florida manatee. Every winter hundreds of manatees make their way to Crystal River to escape the cold but with their numbers in decline will the team be able to swim in this one of kind manatee paradise? Or, has the chance to swim with over 100 manatees become a thing of the past?
