Breed an Alien with a Thing, marinate in salt water, and you get a Leviathan. It’s a soggy recycling [story by David Peoples] of gruesome monster attacks unleashed upon a crew of macho men and women confined within a far-flung scientific outpost.
A stock team of six ethnically mixed men and two alluring women is working out of a mining camp 16,000 feet down on the Atlantic floor, and only has a short time to go until heading back to the surface.
In the meantime, one of the crew, the randy Daniel Stern takes ill after investigating the sunken remains of a Russian ship named Leviathan, dies, and begins transforming into a grotesque, eel-like creature.
The same fate awaits Lisa Eilbacher, and medic Richard Crenna quickly deduces that some genetic transferal is going on. Remainder of the action sees crew members doing fierce battle with the ever-growing creature and being horrifically eliminated one by one.
Shot on elaborate sets in Rome, pic boasts impressive production design by Ron Cobb.