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.
Biologists have unravelled why deep diving mammals such as sperm whales can hold their breath for over an hour when diving for food â they have electrically charged proteins in their blood. Sperm whales make some of the longest dives achieved by mammals, with some lasting up to 90 minutes Photo: AP.