Haliotis rufescens (red Abalone) and Strongylocentrous franciscanus (red sea urchin) awaiting consumption by a group of ravenous humans.
Apparently the urchin does a lot of damage to kelp forests. I found these lurking on the edge of a kelp forest at Fort Ross this weekend. I estimate you get about an ounce or two of edible roe (AKA Uni)out of each.