A marine biologist, a dolphin trainer, a research scientist, and a local sheriff try to hunt down a large sea monster, a shark/octopus hybrid, that is devouring swimmers and fishermen off a south Florida coast.

Peter

Dr. Stella Dickens

Sheriff Gordon

Professor Donald West

Sandra Hayes

Florinda

Miller

Sonja West

Dr. Bob Hogan

Fisherman / Victim

Peter

Dr. Stella Dickens

Sheriff Gordon

Professor Donald West

Sandra Hayes

Florinda

Miller

Sonja West

Dr. Bob Hogan

Fisherman / Victim