Shark Valley in the Everglades National Park is nowhere near any sharks.  It is however a worthwhile stop on the Tamiami Trail (US 41) from Naples to Miami.  Parking is awful and limited as the park is very popular.  You can park on US 41 at your own risk in certain areas but it is discouraged.  It is NOT an RV friendly parking lot.  The attraction is a 15 mile tram ride and tons of alligators.  You can also ride your bike.  Birding is along the canal to the right of the vistor center.  Restrooms are available.