A broken
snail shell with
coralline red alga
cf Calliarthron.
Loose beside it are
two spines of the
Purple Sea Urchin
Strongylocentrotus
purpureus
and a piece
from the edge
of a crab carapace.
Detail from "Sombrio Beach Drift"
watercolour by Aleta Karstad
![[shell with corraline red alga and urchin spine]](sombdet6.jpg)