haha.. anemones will twist up like that... there's a good read by someone on RC .. it does not hurt them, and if I remember correctly there is no real explanation as to why they do it.
I have 5 bta's in my tank, and when they stretch their foot out, I can seem them twist up.. looks really neat.
definitely not something to worry about.... next time you see him get all twisted up, take a pic
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20g BB Mixed Reef // Coralife 150w HQI // AquaC Nano // Koralia 1 & Seio 820 // Jager 200w // AC50
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