February is great time to see manatees. Drive up to Crystal and you will likely see hundreds of them. Apollo Beach is closer to Clearwater but there will likely be fewer manatees.
Obviously, the beach is great in Clearwater. All kinds of beach things to do from parasailing to deep sea fishing....
If you like Greek food, the Sponge Docks in Tarpon Springs has many great Greek restaurants. My favorite seafood place so far has been Frenchy's. There's one in Clearwater Beach and another in Dunedin. My favorite pizza place so far has been in Indian Rocks Beach which is just south of Clearwater Beach, it's called Slyce.