Devil Fish. 1984.
A team of a marine biologist, dolphin trainer, a research doctor and a local sheriff, try to hunt down a large sea creature.
We have a large half Shark, half Octopus terrorizing the sea and made by Lamberto Bava...wait..what...the guy who directed Macabre made this film, well he did, thankfully a year later make a decent horror film with Demons. The plot was probably good on paper a half breed amphibian terrorizing a coastal area and eating beach goers, it was not greatly executed on screen but good gore though. It must have caught someones cos i'm sure there was a movie released in 2009-2010 with Eric Roberts called Sharktopus.
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