The Sawfish Conservation Society launched International Sawfish Day to bring attention to these unusual rays. Their most recognizable feature is the long, flattened snout lined with toothlike projections.
The saw can detect weak electrical signals from prey, and a sawfish can sweep it from side to side to strike at fish. The structures along its edges are separate from the teeth in its mouth. In an underside photo, see if you can spot the mouth and the gill slits that help give away its ray family connection.
About the observance
https://www.fisheries.noaa.gov/feature-story/international-sawfish-day-october-17
More about the featured species
https://www.fisheries.noaa.gov/species/smalltooth-sawfish