Monster from the Ocean Floor 1954

Synopsis:

Julie, an American on vacation in Mexico, spots a giant, one-eyed amoeba rising from the ocean, but when she tries to tell the authorities, no one believes her. She finally teams up with a marine biologist in an attempt to destroy it.

Directed by: Wyott Ordung
Written by: Bill Danch
Runtime: 64 minutes
Tagline: Terror Strikes!...From Beneath the Sea
Cast:
Anne Kimbell
Anne Kimbell
Julie Blair 
Stuart Wade
Stuart Wade
Steve Dunning 
Dick Pinner
Dick Pinner
Dr. Baldwin 
Inez Palange
Inez Palange
Tula 
Roger Corman
Roger Corman
Tommy