1). Weedon Island State Preserve
You want mangroves? They've got mangroves. On your paddle board or kayak, weave through the untouched beauty of nature at Weedon Island State Park. There is also a kayak rental place close to the boat and kayak launch if you don't own your own gear.
Photo from pinellascounty.org
2) Hillsborough River at Waterworks Park
Literally located right outside our back door, Waterworks Park is technically within walking distance of our hotel. The recently opened park features plenty of place space for kids with a water park themed playground and the new boat docks and kayak/paddle board slips that were recently opened. Even if you don't like to get out on the water, the park is a great spot to relax and enjoy a bite at the new, trendy Ulele Restaurant on site.
3) Lithia Springs Park
This park is a great attraction because the water temperate stays around a steady 72 degrees year round. This is also a popular spot for camping.
More about Lithia Springs: http://www.floridasprings.org/visit/map/lithia-springs/
4) Courtney Campbell Causeway
This stretch of Highway 60 features a paved trail perfect for biking, running and walking that runs alongside the causeway. The trail starts near Ben T. Davis Beach (if you want to visit a bay beach, this is an option) and runs all the way across Tampa Bay to Clearwater. If you want to log some serious miles, enjoy great views of the water and enjoy the outside, the Causeway is for you. The recent completion of the Courtney Campbell Trail gives pedestrians a safe way to get from the Tampa side of the Bay to the Clearwater side, and also makes it much easier to sync up with the nearby Pineallas trail on the Clearwater side for those looking to go the distance.
Photo from http://www.tbrpc.org/scenic/cctrail.shtml