Their bodies were recovered, and their swimfins were taken and used by two of Gibraltar's British guard divers (who dived with Davis Escape Sets and (up to here) breaststroke swimming and no fins) (Sydney Knowles and Commander Lionel Crabb).
Nate Branch's heroic identity was alternately known as "Fluid Man" or "Liquid Man", with powers (and a flippered costume) similar to the Impossibles' Fluid-Man.
The bronze sculpture depicts a friend of Imredy's, Debra Harrington, in a wetsuit with flippers on her feet and a mask on her forehead.