本片为经典惊悚电影，叙述地质小队来到亚马逊丛林里，科学家发现海洋与陆地交接间有种恐怖生物，长个骷髅手和蛛网指。他们接着又发现半人半鱼的生物，试图要捕捉牠，不久这可怕生物就要反扑。

Marine scientist Fred Miller designs the world's first underwater home, but when the business magnate funding his work threatens to end the project, Miller volunteers to live in it with his own family to prove it's practical. The underwater clan includes his water-phobic wife and his daughter and son, w…