Giant macrocystis kelp kelp at Judith Pinnacle. This pinnacle rises to as shallow as 50 ft, from a surrounding bottom at 120 ft. Lots of kelp grows atop the pinnacle; in my few dives there I've never seen it reach the surface, although it gets as shallow at 25 ft. Sometimes the kelp seems to deceive the depth finder on the boat into thinking that the pinnacle gets up that high. It can be a tricky dive. I always end up holding onto the kelp as I do the safety stop.