It depends on what your expectations are. If they are low, you may enjoy yourself. There are lots of tropicals in the summer and fall, around inlets, seawalls, bridge pilings, etc. Visibility is variable, but some areas can be reasonably ok. Unfortunately, a great many areas, like Point 'o Rocks near Sarasota, are impossible to get to because every inch of beach is private. Still, some of the seawalls, docks, bridges and debris fields just inside the bay, from Venice up to Indian Rocks can be snorkeled if you are very careful and follow any regulations that may exist. Looking down from adjacent bridges gives a good idea about clarity. Beware of boat traffic. There is not much to see, but cover and food sources will attract small fish. I would certainly not go to that area just to snorkel, but if other business takes me there at the right time of year, I will probably bring snorkeling gear.
