http://dsc.discovery.com/news/2009/05/07/basking-shark-track.htmlMay 7, 2009 -- For centuries, scientists have wondered where basking sharks go in the wintertime. Now, they have an answer -- and it's full of surprises.
In the western Atlantic, the world's second largest fish swims all the way from New England to the Bahamas and across the equator to South America, a new study finds. Scientists have long thought that basking sharks spent all of their time in cooler waters.
"This is equivalent to finding polar bears in Kansas," said lead researcher Greg Skomal, a marine biologist with Massachusetts Marine Fisheries in Martha's Vineyard. "This was a mind-blowing discovery for us."
Five sharks traveled more than 2,400 kilometers (nearly 1,500 miles). One spent a month hanging out near the mouth of the Amazon River.
A closer look at data from six sharks showed that the animals traveled at depths of between 200 meters (650 feet) and 1,000 meters (3,300 feet). Some stayed at those levels for up to five months. The animals appeared to seek out water in an ideal temperature range.