Back to the wonderful Northcott Mouth today to get a winter fillip and celebrate the neighbour's dog's birthday (any excuse). It is the most amazing place.
But what is this stuff? It looked like sesame seed snaps, extruded into cylinders and clumped together in massive boulder size lumps. Click on the image to have a really close look at the structure.
Postscript: it's honeycomb worm! Even the name is fabulous.