Scientific name: Sabellidae sp.6
Taxonomy:
Locations: Eastern Pacific
Group: Marine Life → Invertebrates → Tube Worms
Tentacles are striped dark red and white, compared with a more uniform tan or orange for Eudistylia polymorpha.
This is not Eudistylia vancouveri, which is not found in sand like this, and has alternating bands of deep maroon & greyish-green.
Like most frilly tube worms, these will pull back into their tubes when disturbed.