Shark attack, No date, Before  1975 (Provoked)
Location: Riviera Beach, Palm Beach County, Florida, USA
Activity: Skin diving. Grabbed shark's tail; shark turned & grabbed diver's ankle & began towing him to deep water
Victim: Carl Bruster (M, age 19)
Injury: Ankle punctured & lacerated, hands abraded PROVOKED INCIDENT
Fatal: N
Species: Nurse shark, 2.1 m [7'] 
Source: R. Skocik, p.176