Brittlestar City, Underwater Mountain lying south of New Zealand

Mon, May 19th 2008, 00:00

New Zealand and Australia Scientists revealed an exciting new discovery at a conference in Oslo in 2008.


The New Zealand and Australia research team have been studying the conditions and typography of a deep underwater mountain range, the Macquarie Ridge which stretches south from New Zealand for 1,400 km towards the Antarctic Circle. Macquarie is washed by the Antarctic Circumpolar Current which passes over the underwater mountains (seamounts) at a speed of 2 knots. This is fast for a current, and allows filter feeders in the area to obtain their food as it floats by.

The summits of the seamounts are usually dominated by corals and sponges, but Scientists were excited to discover a huge population of Brittlestar living on the Macquarie summit. Brittlestar are related to the starfish family and are also distant relatives of the sea cucumbers and sea urchins. The Scientists have dubbed the area Brittlestar city after the vast colony of Brittlestar they found.

The Brittlestar are crammed together on the deep summit of the seamount and wave their arms in the current to get food. They were photographed by an underwater robot submarine, the Deep Towed Imaging System (DTIS). DTIS allows Scientists to photograph the depths of the ocean inaccessible to humans. This research project produced over 20 hours of video and photographic footage of the Macquarie Ridge.

There are about 100,000 seamounts around the world, but very few of them have been studied. The seamounts play an important role in the ocean ecosystem as the feeding ground for hosts of fish, marine mammals and seabirds. They may well hold the key to managing the biodiversity of our oceans.

Featured Businesses

Brittlestar City, Underwater Mountain lying south of New Zealand reviews

There are no reviews available. Be the first to submit a review!

Login to comment