If you have kids who want to see Winter, from Dolphin Tale, you just have to go :-). This is historically a research aquarium, but is expanding with the revenues from the increased visitors since the movie came out. Only 1 mile away from Harborview Grande....
You can fish from Pier 60 for a nominal fee, or just go there at sunset to watch people and check out the vendors and gorgeous sunsets. In the summer, they also show free movies on an inflatable screen in the park in front of the pier.
A short drive away, Honeymoon Island has been preserved in its natural state and is a beautiful place to walk the beach without the crowd. The ferry is a little pricy, which is the only reason I can't give it 5 stars. Also accessible by boat.
One of our favorite places to dine. If you like seafood and want to dine in an informal, tropical atmosphere, this is your place. The rice bowls (topped with blackened grouper or mahi-mahi) are my favorite.