11-8-15, 2015  7 night Western Caribbean cruise On Holland America's Eurodam.
I made a full blog about this trip here: 2015 Nov. Western Caribbean Cruise 
It turned out to be another pretty good snorkeling trip.  Here are a few highlights.
sunset over Miami

 Ft. Zachary Beach in Key West and snorkeling:

 a few of the fish there.

 my first jelly fish sting

 dolphins following our wake

 Cuban refugees being rescued by our ship in a storm

Entrance into the marine park in Grand Cayman

 snorkeling with sharks in Grand Cayman

 and huge Permit fish

 even larger Tarpins.

 and more nurse sharks

Touring Greenwood Great House in Jamaica:

 Snorkeling at Half Moon Cay:

 seeing turtles there for the first time

 our ship waiting to take us back to Ft. Lauderdale.

Maybe this wasn't living in South Florida, but it was possible because we live here.  We did this one rather cheaply and with only a month's warning.  It sure was nice not having to worry about flying to South Florida and back!