Pearson: Just when you thought it was safe to go back in the water, you can't get to it.
Blood Beach (1980)
Ending / spoiler
Directed by: Jeffrey Bloom
Starring: Burt Young, Marianna Hill, David Huffman, Otis Young
The monster lives below the sand. It is a giant plant-like creature. They blow it up but we see before the movie ends that the pieces of the destroyed monster have spawned many smaller monsters that begin terrorising the beachgoers.
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