There's a marina in the Keys named Robbie's, and it's located at mile market 78.5 or thereabouts. The special attraction at Robbie's is that they have a large resident population of tarpon, jack crevalle, and brown pelicans, all looking for handouts of baitfish. You can buy a bucket of fish at the counter and feed the big boys. Here, a big tarpon eagerly chows down on a fish that hasn't even hit the water yet. I love the huge flare of the gills as it sucks in some dinner.