In a world of seven billion people, where every inch of land has been mapped, much of it developed, and too much of it destroyed, the sea remains the final unseen, untouched, and undiscovered wilderness, the planet’s last great frontier. There are no mobile phones down there, no e-mails, no tweeting, no twerking, no car keys to lose, no terrorist

We came from the ocean, and we only survive by carrying salt water with us all our lives—in our blood, in our cells. The sea is our true home. This is why we find the shore so calming: we stand where the waves break, like exiles returning home. —Dr. Ha Nguyen, How Oceans Think