Creature From the Haunted Sea

1961 directed by Roger Corman starring Antony Carbone, Betsy Jones-Moreland, Robert Towne, Beach Dickerson, Robert Bean, Esther Sandoval, Sonia Noemi Gonzalez (say that rapidly ten times in a row) and Edmundo Rivera Alvarez.
Secret agent XK150 joins the oddball crew of a seedy crook who’s been hired by anti-Castro rebels to help them smuggle the state treasury out of Cuba. Everything goes wrong, of course, and oh yes, there’s also a monster! Rare excursion into comedy by director Corman, filmed in Puerto Rico along with The Last Woman on Earth and Battle of Blood Island. The Creature was made from a wetsuit, some moss, Brillo pads, tennis balls for the eyes, ping-pong balls for the pupils and pipe-cleaners for the claws.