Divers huddle together, clutching coffee cups while steam rises between their hands, disappearing against the backdrop of gray skies and grayer waters. At 45° F in February, and with water temperatures only a few degrees warmer, the conditions may seem less than inviting. Surprisingly, the divers demonstrate enthusiasm while squeezing into their drysuits, drawn by the promise of the vibrant and bizarre sea life that Puget Sound, Washington, has to offer. Jaques Cousteau famously labeled it his second favorite diving destination globally. While diving in warm Caribbean waters is a popular choice, many argue that diving in the Pacific Northwest offers a unique adventure that is unequaled.