The Canadian dollar (symbol : $ ; code: CAD) is the currency of Canada. It is abbreviated with the dollar sign $ , or sometimes C$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
14. View. comments. The sperm whale is able to hold its breath underwater for up to 90 minutes because of a unique protein in its blood, an international team of scientists has discovered. The huge mammal will often dive up to 3km deep under water for more than an hour in search of food.
Whales roam throughout all of the worldâs oceans, communicating with complex and mysterious sounds. Their sheer size amazes us: the blue whale can reach lengths of more than 100 feet and weigh up to 200 tonsâas much as 33 elephants. Despite living in the water, whales breathe air. And like humans, they are warm-blooded mammals who nurse their young. A thick layer of fat called blubber insulates them from cold ocean waters. Some whales are known as baleen whales including blue, right, bowhead, sei and gray whales.