Tube anemone ID

Found in a cave in Belize at night; 3" tall. Anyone know the species?

Cheers,

Marli

I wonder if that isn't a solitary hydroid. If you'll send me a high res file (need to look for internal septa) I'll forward it to my hydroid loving friend John who in turn will probably forward it to some of his colleagues.

thanks for the file Marli. Now that I can see the mouth area & the ring of smaller tentacles I'm sure you're right. I'll still send it to John for his opinion as to family.