This fellow was the highlight of my day on Catalina as I had never seen one before. Now I have. He is a Southern Kelp Crab. There must have been a nest of Garibaldi eggs near by since a protective daddy kept buzzing me and at one point actually hit me on the side of my head. I just looked at him wondering what I had done to deserve this very rude treatment. I did search for the nest but failed to find it.