Tube anemone in Bali. Interestingly, a tube anemone isn’t really a sea anemone at all, but

Tube anemone in Bali.

Interestingly, a tube anemone isn’t really a sea anemone at all, but part of a different class of anthozoans (anemones and corals) called cerianthids.They have two rows of tentacles arranged in a spiral shape.