Groups like the Calusa Waterkeeper, the Center for Biological Diversity, Friends of the Everglades and about a dozen others signed on to a May 8 letter that was delivered to the governor's office Monday. National Oceanic and Atmospheric Administration, or NOAA, satellite imagery recently showed a bloom of about 300 square miles on Okeechobee. "Based on what's happening on the lake, we're potentially ahead of the situation in 2018," said Calusa Waterkeeper John Cassani. "It's already in the lake and the red tide has been in the back bays and along the coasts since last November. It just doesn't seem to want to recede. It's killing fish and I've heard of some sea turtles. So we think now is the time to get ahead and move water south."