Samantha Maywell, a mermaid at Weeki Wachee State Park in Florida, was struck by a boat propeller in the Gulf of Mexico in August 2013.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC
History of Boat Propeller Safety
Mitigating Boat Propeller Injuries & Fatalities Chart
Four Volume Review of the Boating Industry’s Boat Propeller Guard Product Liability Defense