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The Graveyard of Ships is an ocean location close to Rocky Point Beach, named because the wreckage of many ships can be found there.
Scooby-Doo, Where Are You!
It had "glowing seaweed" which was known only in that particular area. It was the seaweed that eventually gave away the Ghost of Captain Cutler. Close by was a cove with a hidden cave where the stolen ships were discovered by following the ghost's trail.