The depths of the ocean are a powerful draw for researchers, experienced divers, and photographers alike. The vast bodies of water which cover over 70 percent of the planet’s surface are still being explored and documented. Lured by mystery, blackwater photographers dive at night into icy, pitch-dark depths. Taipei-based photographer Wu Yung-sen has been deep sea diving and photographing marine life for four years. On a recent blackwater dive—unable to see the bottom and surrounded by impenetrable space—he chanced upon a rare larval Wunderpus octopus. A stunning image captures the encounter; it shows the delicate and transparent baby octopus encasing its own brilliantly red brain, a sight few ever witness in the wild.