Our pic of the day revisits Mermaids of Tiburon (1962), directed by underwater cinematography expert John Lamb. Wetsuit-clad bad guy Milo Sangster has just decked (literally) the hero, Dr. Sam Jamison (George Rowe).
Lamb fared much better as the director of underwater cinematography on television (Sea Hunt and Voyage to the Bottom of the Sea) than he did as a film director, unfortunately. After Mermaids, he produced and directed forgettable low-budget sleaze, finally hanging it up in 1986. He passed away 20 years later.