Australian scientists use underwater robots to explore remote reefs in South Pacific expedition

Sydney, June 3 (IANS) Australian scientists are using cutting-edge underwater robots to explore remote and largely uncharted reef systems in the South Pacific, the University of Sydney said on Tuesday.

As part of a major international expedition, Australian scientists are mapping deep-sea habitats and biodiversity near Norfolk Island, an isolated Australian territory 1,600 km northeast of Sydney, one of the South Pacific's most ecologically important regions, according to a university press release.

Its location and mix of tropical and temperate ecosystems make it key to tracking species shifts and climate change impacts, the release said.

Equipped with high-resolution cameras and sensors, the Autonomous Underwater Vehicles are capturing thousands of images to create 3D maps of the seafloor and document marine life in unprecedented detail, it said, adding underwater robots serve as the eyes and hands of scientists, safely exploring deep-sea areas beyond the reach of human divers, reports Xinhua news agency.

"It's the first time that parts of the seabed in the Norfolk Ridge will be imaged in this detail," said Stefan Williams from the University of Sydney's Australian Center for Robotics.

The expedition unites scientists from Australia and New Zealand to map the seafloor and collect marine specimens such as fish, corals, molluscs and algae to enhance knowledge of regional biodiversity, the researchers said.

"Norfolk Island is a key oceanic stepping stone for species between tropical New Caledonia and temperate New Zealand," said Shane Ahyong, acting chief scientist at the Australian Museum Research Institute, leading the second phase of the Norfolk Island scientific expedition.

--IANS

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