Just got back from Florida! Here’s my report:

Fort Lauderdale water had a LOT of rough, scratchy seaweed, which made for an unpleasant swim. I don’t remember this much seaweed 5 years ago.
Headed to Tampa. Sanibel had a slight smell, water seemed ok. Siesta key had a slight smell, red specks in the water, like paprika. Didn’t spend much time there.
Spent multiple days at Coquina beach, located south of Anna Maria and just across a bridge from Longboat key. It was reported as having respiratory irritation. Nope. All wrong. Water was clear, clean, brimming with sea life and dolphins, low crowds made it fantastic.
Clearwater was clean too, but crowded.
Longboat key had a 1 or 2 mile stretch of raw sewage smell. Just horrible.

We had a great time. I already miss FL and her great beaches. I’m already thinking about our 6th trip there. Maybe we’ll try the panhandle. Thanks for all the input!