Palmetto Estuary Preservation Project Park. You can park in the parking area just North or South of the light and take that nice little 1/4 mile hike back up the trail which I highly recommend.
There are bathrooms here but they may or may not be open There are some nice areas to check out at the estuary. With this short hike to the cache you can see, smell, and hear lots of wonderful things!
Check out the info signs along the way.
Please close the lid tight on this to keep it waterproof, thanks! New cache container per the move, it is now a plastic test tube.
This area gets all kinds of trash washed up and could use a little CITO on the way back out. Bring a bag and help if you can.
It is in a out of the way location, but if a muggle does happen by, please use your best stealth 
skills to keep the cache location hidden.