dl5393's picture


Observed: 24th September 2012 By: dl5393
S159 Neighbourhood Nature - current student
dl5393’s reputation in Invertebratesdl5393’s reputation in Invertebrates
rocky shore pics+ random 2012 023
Species interactions

No interactions present.


dejayM's picture


I think that you might be mistaken.
My experience only extends to triqueter but I suspect you might be interptreting the ridges on the worn-down, eroded, areas (outer walls) as being double. I don't think we can see double ridges, specially in that small ring area - right of centre. From what I see there appears to be a more triangular ('triqueter') appearance to the tubes.
I'd be interested in your response.
Inevitably, the name has changed!
Spirobranchus triqueter WoRMS
See my recent post here http://www.ispotnature.org/node/383397