Pretty good for a B movie
Attack of the Crab Monsters is a Roger Corman monster movie. A scientific-U.S. Navy team lands on an island to study the effects of nuclear testing. They found out it has created  agiant crab hence the title. One of the main characters is Russell Johnson who played the Professor on Gilligan’s Island. For a B movie it’s not bad. They actually built a giant crab instead of going cheap and just showing close-ups of real crabs. It’s also really short at just around an hour so they couldn’t blow it by dragging things out.
The movie title "None," available on Prime Video, has received an average rating of 4.3 from 211 reviewers. 
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 {"Content advisory": ["Violence", "smoking"], "Audio languages": ["English"], "Subtitles": ["English [CC]"], "Directors": ["Roger Corman"], "Producers": ["Roger Corman"], "Starring": ["Richard Garland", "Russell Johnson", "Pamela Duncan"], "Studio": ["Shout! Factory"]}

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