The mermaids that appear on the video screen behind Jimmy and the Coral Reefer Band are the World Famous Weeki Wachee Mermaids!! More details on the mermaids that appear in the video is available at Weekiwachee.com.
From the Weeki Wachee Mermaids Facebook page: “Fins up” at the Jimmy Buffett “Lounging at the Lagoon” concert last night in Houston, TX, with the World Famous Weeki Wachee Mermaids behind him. Thanks to Jimmy Buffett and his staff for taking the Weeki Wachee Mermaids “on tour” with him! Another photo is available in a post on May 4th.