Shark attack, 1960-03-31 (Unprovoked)
Location: Off Boca Raton Hotel & Club, Boca Raton, Palm Beach County, Florida, USA
Time: 12h00
Activity: Treading water
Victim: Robert B. Winkler (M, age 42)
Injury: Ankle bitten, hand injured while striking shark
Fatal: N
Species: 1.2 m [4'], possibly  larger shark
Source: V.M. Coppleson (1962), p.249, erroneously lists the date as 3/31/1961; H.D. Baldridge, p.142