Friday, December 11, 5 to 11PM, and December 12, 11AM to 11PM.

Harbor Branch Oceanographic Institution’s Holiday Cayo Carnival.

This year’s Holiday Cayo Carnival features 18 hours of non-stop entertainment at the big-top tent, Conch Republic Seafood Co., Greene and Elizabeth streets.

Talent includes Howard Livingston and the Mile Marker 24 Band, Grammy-nominated Larry Baeder and Paul Cotton, of Poco, with his local band.

Also food, libations and environmental presentations.

A $5 entrance fee provides admission for both nights and all day Saturday.

Click here for full details.