Home to some of the most remote marine ecosystems and best dive spots in the world, the South Pacific offers the chance to discover a yet-unknown species. With a marine biologist as your personal guide, you’ll visit Rangiroa, Fakarava and Tikehau in the French Polynesian Tuamotu Islands to search for undiscovered creatures. Fakarava especially features a unique untouched environment and is now a Unesco Biosphere Reserve. Expect to see blacktip and oceanic whitetip sharks, humpback whales and manta rays. Brown + Hudson can also organize private dives to other spectacular spots, deep-sea fishing expeditions and a visit to a pearl farm.