"Classic early Corman, famed as the picture where you can see the tennis shoes on the feet of the man wearing the crab monster suit. The plot - involving monsters who assimilate the minds, bodies and voices of the people they eat - is fairly clever, especially as it allows very cheap voice-over for much of the dialogue. The main problem with the film is that the crab monsters just don't cut it. They have a bizarre charm of their own, but convincing as crab monsters they are not. The ending of the film, in which hero and heroine sink into the sea on a tiny plot of ground, is surprisingly bleak for an early Corman picture, most of which have happy endings."