What are these things!!

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RusticsReef

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Just found two of these under a coral. Any ideas?
 
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Video or photo under white light would help
 
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Fire Oops GIF

Not the most educated on polyclads so take with salt but I would evict in case it is a leopard.
 
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RusticsReef

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Certainly creepy. Gray in color. Could stretch out to 2 inches or more. Looked between a giant flat worm and nudibranch (sp)
 

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