What is this? Any ideas?

shartpants007

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It could be some sort of sponge, but I'm really not sure. I just noticed it today. Any ideas?

It's the stuff just above the hermit crab shell.

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High pressure shells: Do you look for signs of stress in the invertebrates in your reef tank?

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  • I rarely look for signs of invertebrate stress in my reef tank.

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  • I never look for signs of invertebrate stress in my reef tank.

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