Length of tentacles about 4 inches.
Video of this octopus minding its own business: http://youtu.be/KIGRgzW57Vc
Or a great day gets greater, for me, at least. My first time seeing this species in the south.
With red rock crab lunch. Video: http://youtu.be/_Wkl3exDmys
The East Pacific red octopus (Octopus rubescens) is the most commonly occurring shallow-water octopus on much of the North American West Coast, and a ubiquitous benthic predator in these habitats. Its range extends from the southern Gulf of California at least to the Gulf of Alaska, but may also occur in the western Pacific Ocean. O. rubescens occurs intertidally to a depth of 300 m.