Learn about the single-celled thug that's caused massive carnage of aquatic life on Sanibel Island, Florida: Harmful Algae Blooms. This environmental warfare was carried out by some unlikely suspects... find out who's to blame for this attack on our own shores.

Also: Climate change's devastating effects on Sanibel, bizarre marsh-creature facts, engrossing history, and biking, paddling, and birding gems.