SOURCE: http://newsinfo.inquirer.net/334495/australian-scientists-discover-deep-sea-corals
GREAT BARRIER REEF
An undated handout photo released on March 1, 2012 by the Catlin Seaview Survey shows Australian scientists mapping the iconic Great Barrier Reef with a custom-built underwater camera. An estimated 50,000 panoramas, shot in 360-degree high-definition detail, will be uploaded to Google’s Panoramio photo site for use on Google Maps and Google Earth in a kind of “Street View” under the ocean. AFP PHOTO / Catlin Seaview Survey
SYDNEY – Australian scientists mapping the Great Barrier Reef have discovered corals at depths never before thought possible, with a deep-sea robot finding specimens in waters nearly as dark as night.
A team from the University of Queensland’s Seaview Survey announced the unprecedented discovery 125 meters (410 feet) below the surface at Ribbon Reef, near the Torres Strait and at the edge of the Australian continental shelf.
Ove Hoegh-Guldberg, chief scientist on the project, told AFP on Thursday that coral had previously only been shown to exist to depths of 70 meters and the finding could bring new understanding about how reefs spawn and grow.
“What’s really cool is that these corals still have photosynthetic symibionts that supposedly still harvest the light,” Hoegh-Guldberg told AFP.
“It’s interesting to know how they can handle such low light conditions — it’s very deep dusk, you can barely make out much at the bottom.”
Researchers were particularly interested in how the coral reproduced at such depths. Shallow corals mate in a synchronized spawning event triggered by the moon which Hoegh-Guldberg said would be “very hard to see” at 125m.
