My first sighting of Ahnfeltiopsis linearis-- abundant on the rocks at low tide.
Green Algae, soft and sponge-like, growing on rocks that were exposed at low tide.
Green Pin-cushion Alga (Cladophora columbiana) Spongy/cushionlike, forming low-growing mats of entangled filaments, 3–5 cm tall.
Beachcombers's Guide to Seashore Life of California, J.D. Sept, Rev. ed. 2009, p. 224.
SEANET Hopkins Marine Station for "Nearshore Plants and Animals of the Monterey Bay"
https://seanet.stanford.edu/Chlorophyta#Cladophora
Saw several of these multi-legged organisms during this outing
Growing like a Caulerpa from a creeping stolon, but what species has a secondary branching pattern like this?