Have you ever really watched your kids splashing about in a pool, filling buckets up in the ocean surf, or foraging knee-deep in a creek? You'll see curiosity, serenity, joy — the near-universal responses to spending time on or near the water. We've always been drawn to the water, and studies show that when we’re near it — or even just viewing pictures of it — our blood pressure drops, our heart rate slows, and we report higher levels of life satisfaction. It settles the mind, eases communication, and connects us to the natural world. This is why for our second annual Outside Issue, we’re diving right on in — highlighting national shores and waterways that are worth a visit, exploring the father-son pastime of fishing, digging into the Icelandic art of swim lessons, and talking to Kai Lenny, the world’s most daring surfer about chasing waves — and now, twins.