Nearly 500 deaths have been observed in the mysterious cases, officials said.
Scientists may have identified a prime suspect in what is causing abnormal behavior and deaths in endangered smalltooth sawfish in the Florida Keys.
As of May 8, the FWC said 47 smalltooth sawfish deaths have been reported, but scientists believe the actual number is higher. There is limited data on how many of these rays remain in the wild. Most results from the hundreds of fish tissue and water tests came back normal, but harmful algal species were found in some of the samples. The FWC said more work is needed to determine if this could be the culprit.
The Mote Marine Laboratory team in Sarasota, Florida, attempted to save the life of a distressed sawfish that was seen whirling in the Cudjoe Bay in the Florida Keys at the beginning of April. The scientists were able to take the sawfish to its rehabilitation center, but the efforts to improve the animal's condition were unsuccessful.
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