Over 70 Florida sawfish have died since December, with mysterious brain changes hinting at algal toxins.

Endangered smalltooth sawfish in Florida are dying after spinning erratically, with over 50 deaths last year and 22 recent incidents since December. Despite extensive tests, the cause remains unknown, though subtle brain tissue changes suggest potential algal toxin impacts from climate change. The species, endangered since 2003, faces ongoing research and conservation efforts.