Five minutes into my first dive in the Banda Sea, I came face-to-face with a scalloped hammerhead shark, gliding effortlessly in its underwater realm as it emerged from the depths to investigate the alien visitors descending from above. A second hammerhead swam past a moment later but was less bold in its approach and quickly disappeared back into the abyss. I had come to this remote corner of the globe after hearing stories of schooling hammerhead sharks, abundant sea snakes, magnificent coral formations, huge sponges and the possibility of observing other pelagic migrants such as manta rays, false killer whales, leatherback sea turtles and the pygmy blue whale. My efforts would not go unrewarded.