Help ID strange white substance on live rock

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anyone have any idea what this strange white stuff is on my rock ? and should I be worried

cheers

IMG_20260413_180637014.jpg IMG_20260413_180633584.jpg IMG_20260413_180620272.jpg
 
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Likely sponges or tunicates (I'm thinking tunicates). They're filter feeders and usually not a concern unless they're encroaching on corals.
 

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