Goofs:
Crew or equipment visible: As the Professor injects himself with coelacanth plasma, the camera pushes in slowly on the reel-to-reel tape recorder. The cameraman's shadow can be seen briefly on its front panel. (more)

Trivia:
Professor Donald Blake (Arthur Franz) has a collection of facial reconstructions depicting the ascent of man from the early hominids to modern man (or woman in this case, actress Joanna Moore). One of them is that of Piltdown Man, whose "discovery" in 1912 was exposed as a hoax in 1953, five years before the movie was released. (more)

Filming Locations:
Occidental College -1600 Campus Road, Eagle Rock, Los Angeles, California, USA

Quotes:
Sylvia Lockwood: [Seeing a giant dragonfly at the window, she screams]
Professor Donald Blake: Don't open the door! It'll escape!
Sylvia Lockwood: Who cares?
Professor Donald Blake: I care! I want it!
Jimmy Flanders: Well, what is it?
Professor Donald Blake: I don't know! We'll find out when we catch it!
(more)