Tide pooling
Vallecitos Point, ~60ft. This was an all white sea slug, white rhionphores and spot. Reminded me of a sidehill.
Yesss, one I've been hoping to see for a while. Found out of the water but I moved it back into the pool for photos.
low tide
California Diaphana?
more photos here: https://www.inaturalist.org/observations/105889815