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Does the devil ray have a poisinous spike like the stingray?
They are of the same family so, I would guess that they do have a spike.
No they are harmless with the exception of the size of the animal! They can grow to 20ft across and eat plankton and small critters, Used to swim with them in the Keys as a kid in the 60s and hang on to there backs till they started to haul ass! The size though is intimadating!