Anemone ID at night in Bonaire

I don't know if there are any anemone experts out there, but I came across a few of these while doing a night dive on the Bari Reef in bonaire. They were all found in sand flats without any coral or rocks near by. I'm sure it's a fairly common anemone, but I had never seen one this open at night before.

Banded tube dwelling anemone

Arachnanthus nocturnus

Cheers,

Marli

Thanks for the ID.