Deep Water Emergence in the Milford Sound of Fiordland National Park (recorded underwater)

Recorded 28 feet below the surface of the water, join Mandela in
the Discovery Center's Underwater Observatory for an interview with
Daniel Crook & Andrea Ferris. Daniel & Andrea are nature
guides in The Milford Sound of Fiordland National Park on New
Zealand's South Island's West Coast. The Discovery Center is a
floating building which gives visitors the chance to view extremely
rare species usually found between 50-5,000 feet deep in the
ocean.Overlaying the sea water in the fiord is a layer of fresh
water, the result of high annual rainfall in Fiordland. This
combined with the narrow shape of the fiord causes a phenomenon
known as deep water emergence where light is not allowed to
penetrate past the fresh water. This creates a similar environment
to the deep ocean at a much shallower depth, allowing visitors the
chance to see deep sea species close up.Unlike an aquarium, the
fish are free to come and go; it is the people who are contained.
This provides a unique opportunity to observe real life situations
deep below the surface of the fiord, quite different from the
artificial environment of an aquarium.​

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