Dun-Dun-Dun-Dun-Dun-Dun-Dun-Dun!

3/10/2012 12:01 AM PST BY TMZ STAFF
0305_memba_jaws_revealSusan Backlinie -- now 65-years-old -- was spotted at a convention in New Jersey, acting swimmingly.

Backlinie was a stuntwoman who specialized in swimming and animal training.

Susan posed for Penthouse in January 1973.