The nightmare begins when Captain Lansen (Eric Porter) attempts to transport     illegal explosives and a motley group of passengers on a rusty tramp steamer     that becomes stranded in the vast floating swamp of the mysterious Sargasso      Sea. Under cover of night, the terrified travelers encounter unspeakable       monsters, man-eating seaweed, vicious mutant pirates and stupendously endowed  women. A Hammer Films classic.                                                 Michael Carreras---Great Britain---1968---97 mins.