Wednesday, April 7, 2010

Great white shark amazes scientists with 4,000-foot dive into abyss

Scientists revealed that the 15-foot shark they've named "Shack" probed to 1,200 meters, or 3,937 feet, as it traveled across open ocean.



Malcolm Francis, principal scientist in charge of the tagging study, is calling this "the world's deepest great white shark dive record" and said it extends the predators' known vertical range by about 600 feet--which is substantial given that great whites, until fairly recently, were regarded as coastal predators.



If placed into perspective Shack might as well have been swimming upward into outer space: That's how bizarre the marine universe is at the depth to which the shark delved.



It passed through the Mesopelagic Zone (600-3,300 feet), also referred to as the "Twilight Zone," and continued well into the Bathypelagic Zone (3,300-13,000 feet), or the "Midnight Zone."



This is the realm of alien-like sea jellies and squids. It's also home to monster-like, needle-toothed predatory fishes and eels that utilize bioluminescence for light and have spawned nature TV specials and, subsequently, nightmares.



What was Shack doing in the company of viperfish, hatchetfish, dragonfish, sabertooth fish, fangtooth fish and gulper eels?



Unfortunately, nobody knows with certainty. Scientists at New Zealand's National Institute of Water & Atmospheric Research did not address this in a five-year study that also tracked the country's white sharks migrating to warmer areas during the winter.

By: TwitterButtons.com
By rhyanjames.info

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