Seacrest Park - Cove 2, Seattle, WA. First two photos are Enteroctopus dofleini, also known as the Giant Pacific Octopus. The third photo is a Bobtail squid also known as the stubby squid. Thanks to Jen Vanderhoof for ID'ing the crab. It's a Scaly Lithodid (Placetron wosnessenski).