Attack of the Crab Monsters (1957)
Do you like sci-fi movies from the 1950s? I love them, and I just found this classic gem, Attack of the Crab Monsters, on youtube. Yay!
Scientists become trapped on an island with crabs that have been affected by radiation from atomic bomb blasts. The crabs have mutated into giant telepathic killers! Telepathic? Yes! The giant crab monsters can speak to the minds of the surviving scientists, using the voices of the scientists they have already eaten.
This was a favorite of mine as a child, and I haven't seen it in over 40 years. Now, I present the great trailer for this movie for your viewing pleasure: