An elusive creature with a saw-like snout and teeth where they seemingly shouldn't be, thrashed in the shallows of the Intracoastal Waterway last month, its vulnerable white underside belly up, it's slash of a mouth opening and closing as if gulping for air.
The federally endangered smalltooth sawfish, which was approximately 14-feet long, had the tip of its long flat snout tangled in a fishing net next to a dock in Lantana. Its unusual teeth, which line the outside edge of its rostrum like a hedge trimmer, only deepened the trap as they tangled in the net.
When Florida Fish and Wildlife Conservation officers arrived on Feb. 27, they were able to free the tropical fish that looks like a shark but is really a ray, within minutes.
And it was a critical rescue as sawfish populations struggle with habitat loss and, more recently, a mysterious spinning disorder that has resulted in more than 200 reports to FWC since December 2023.
"Every specimen of this endangered species is vital to its genetic diversity," said FWC Major Mike Davis, in a statement. "I am grateful our officers were able to return this one to its habitat safely."
The freed sawfish, which is believed to have been rescued from a residential dock in Lantana's Hypoluxo Island west of Manalapan, did not exhibit spinning behavior, according to FWC.
An update on the sawfish spinning behavior was issued Wednesday, March 5 by the FWC. After a lull in reports, 22 have been made since December as researchers struggle to discover the cause. FWC has recorded 62 sawfish deaths since December 2023.
In the March 5 update, FWC said water tests haven't identified a cause of the spinning with no harmful levels of chemicals or heavy metals in sediment. There have also been no signs of parasites, bacteria, or viruses that could explain the behavior.
Algal toxins are a possibility, but more testing must be done, FWC said in the update.
Florida lawmakers budgeted $2 million to support the investigation, with $1.75 million earmarked for research by the Bonefish & Tarpon Trust for work in Biscayne Bay, Florida Bay and the Keys.
Sawfish facts
∎ Their "teeth" line the outside edge of their snout and they swing it from side to side to impale and stun its prey. But they aren't actually teeth, they are denticles, which are very specialized scales.
∎ They may look like sharks, but they are rays.
∎ They live in coastal tropical and subtropical waters, including estuaries and river systems.
∎ There are five species of sawfish worldwide.
∎ They once lived from New York to Texas, but the smalltooth sawfish is now largely limited to the waters off the Florida coasts.
∎ They are protected by the Endangered Species Act in the U.S.. It is illegal to catch, harass, collect, buy or sell any part of any species of sawfish.
SOURCE: Florida Museum of Natural History