Be really careful about where you go in St Pete proper bc there is a large criminal element in the city
Here's a crime map
http://www.neighborhoodscout.com/fl/st-petersburg/crime
St Pete Beach , Treasure Island and Madeira Beach are all OK
Ft Desoto SP is a neat place to be
You can rent kayaks from the rental place that's across the road from the Egmont Key Ferry Dock
While the water is too cold for manatees ( which are really boring critters ) up at Crystal River
You may be able to see them ( or at least their nostrils ) on the bayou that goes from the kayak rental place to the inlet
Give the guys at the kayak rental place some oreos and tell them that they're from the guy w/ the green Pungo 14
If you want to see wall to wall live aligators then head over to Myakka River State Park and stop in Saraosta on the way back
http://www.tripadvisor.com/Attraction_Review-g34618-d105479-Reviews-Myakka_River_State_Park-Sarasota_Florida.html
Learn how to do the Gulf Shuffle lest you step on a sting ray
http://www.tampabay.com/news/publicsafety/do-the-stingray-shuffle-to-avoid-nasty-stings/2125433
On super windy days , wind surfers hang out on the NE side of the Sunshine Skyway Bridge
Use the first rest area on I-275 S to get there
https://www.youtube.com/watch?v=j_74uuNlues