Lords of the Deep (1989)

A car crash of a movie, though as it takes place underwater maybe it should be called a sub crash? In an underwater base, Claire (Priscilla Barnes) is studying a mysterious goo... and getting an LSD trip by touching it. Then stranger things start happening such as a colleague returning to the base from a dive replaced by the same goo. A series of earthquakes rock the base. Claire also falls for O'Neill (Daryl Haney) with a really terrible 'tache. 

The always glaring base commander Dobler (Bradford Dillman) is hiding something from his team, and also killing them off with the help of his computer and control over the oxygen supply. Claire discovers the goo is a fast mutating life form. Dobler calls it a threat but Claire knows the real threat is elsewhere...

This is a terrible load of tosh. It has cheap sets, cheaper special effects, baffling plot and indifferent to terrible acting. Unintentionally hilarious and tremendous fun of course.