Sea Lion Cave Snail

This is a snail from the Oregon coast. I'm not kidding: this guy was slithering around about two blocks away from the parking lot for the Sea Lion Caves. You would think that all the salt air would inhibit snails; but no, this snail was about the size of my index finger curled against my thumb. On the other side of its shell, you could see where I'm guessing a crow had dropped it or tried to break open its shell with a rock.