cnn s nick valencia with that story. reporter: fishing boat captain dustin pack says he s never seen the red tide in tampa bay this bad. i hope that the worst is behind us in tampa bay. i pray that it is, but i m not holding my breath. reporter: the toxic blooms which cause fish kills and can be harmful to humans happen almost every year in and around florida s coast. but for the lifelong fisherman, this year is different. typically what happens is red tide happens offshore. with currents and tides or wind direction, it can be blown into the beach. what s different about this one is this started inside of tampa bay. reporter: back in the spring, 215 million gallons of wastewater were released into tampa bay from this plant to relieve pressure on a leaking reservoir. you can see cleanup is still under way. environmentalists say the disaster is fueling the red tide that we re seeing in tampa bay. now five organizations are suing the governor, the acting