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The young tend to spend plenty of time on land but as they get older they will also spend more and more of their time in the water. The Harp Seal has thick fur and layers of blubber that allow it to be able to thrive in such a cold region. They can grow as long as 6 feet and weigh up to 400 pounds. They have to find a variety of food items based on region and the time of the year. They can spend many hours a day trying to find food.
Dr. Jack Terhune studies seal communication at the University of New Brunswick and has measured the amplitude of seal calls. His research has shown that harp seals, often living in groups of up to 150, can alter the pitch of their calls so that each seal can be heard. Off the coast of Newfoundland there are between 5.5 and 6.5 million harp seals in regular migration up and down the eastern seaboard. One sealâs call could be heard by 10,000 other seals at a range of two to four kilometers away, so the changes of pitch and frequency are important to avoid overlap.