Doubtful Sound is a very large and naturally imposing fjord on the south west corner of New Zealand, close to the smaller but more accessible Milford Sound. It took second place after said Fiord as New Zealand's most famous tourism destination.
This fiord is home to one of the southernmost population of bottlenose dolphins. This population is small (56 individuals) and has been drastically declining over the past 6 years. Other wildlife to be found in Doubtful Sound includes fur seals and penguins. The waters of Doubtful Sound are also home to an abundance of sea creatures, including many species of fish, starfish, sea anemones and corals. It is perhaps best known for its Black coral trees which occur in unusually shallow water for what is normally a deep water species.