BEIJING, Feb. 19 (Xinhuanet) — It’s been 40 million years since Antarctic waters were warm enough for sharks to lurk around and feed on polar prey, but rising ocean temperatures from global warming could eventually bring the toothy predators back, media reported Tuesday quoting scientists as saying.
If sharks reenter Antarctic waters, the entire polar ecosystem will be severely altered, with the ferocious predators easily preying on a wide assortment of slow-moving, soft-bodied organisms that dominate the sea floor of the cold-water environment, said Cheryl Wilga, an associate professor of biomechanics at the evolution at University of Rhode Island.
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