Rockweed #1, from Gerstle Cove, Salt Point CA
Closest thing I can find for this is:
Neorhodomela oregona (?)
Of course, my ID of this (immediately above) as Neorhodomela larix could be wrong. This Black Pine Rockweed came from Fitzgerald Marine Reserve.
Rockweed #2, from Gerstle Cove, Salt Point CA
Rockweed #2 also grows in large mats and from this perspective looks almost the same as mats of black pine. Zoom in, however, and it appears that in this case, there are clusters at intervals along the stems, where the black pine is all spikes.
Cladophora columbiana (?) from Horseshoe Cove, Bodega Bay …amateurs like me are more likely to dare a species name, instead of .sp even when we know many can’t be told apart except under a microscope.
Acrosiphonia .sp from Gerstle Cove (too many similar species for even me to make a wild guess).