Mating piles of these all over the undersides of the rocks. Some with eggs, like this one. They're parasitic on tubeworms, stealing their food. Night low tide on the city dock (-5 ft), on limstone riprap.
Hanging out with their eggs, underneath a rock. I saw these guys on eggs in January in this spot also. First daytime low tide of Spring. -3.7 ft, at the ferry dock, in light snow.
