The Antarctic blue whale can weigh up to 400,000 pounds and stretches to 98 feet in length. The underwater call of the sperm whale, the earth’s loudest, registers at 230 decibels.

Those aboard a Cape Ann Whale Watch vessel on July 8 were amazed to witness a blue whale - the largest animal to have ever lived. "It was almost as long as our 115-foot boat," said the post on the ...