For the scuba diver Papua New Guinea offers the greatest diversity of seascapes in the tropics; fringing reefs that hug the sides of islands, barrier reefs that protect calm sand-filled lagoons, coral pinnacles sitting in immeasurably deep water, magnets for pelagic fish and marine mammals, World War II wrecks from planes to freighters to tanks and destroyers. The warm waters, supplied with an endless supply of nutrients from the constant upsurge of water from the abyssal depths that surround Papua New Guinea, provide the perfect medium for such intense prolific coral growth that the coral reefs of Papua New Guinea have been described as the "rainforests of the sea". Into this mélange throw small, intimate, dedicated dive resorts and some of world’s finest live-aboard dive vessels and you can see why Papua New Guinea truly is diving's frontier.