Leather Limpet (Onchidella borealis), crawling across the rock in the mid-intertidal zone on 24 July 2017.
Although this Leather Limpet stands out against the rock, sometimes they're well camouflaged against the background. How many individuals can you find in the image below? (Hint: They might be different colors and different sizes.)
I've circled the Leather Limpets in the next photo:
To learn more about Leather Limpets, and to see fun pictures of juveniles, check out the post called "What's it like on the outside?" from 25 August 2012.
P.S. Leather Limpets seem to like foggy days, so this can be a good time of year to look for them!