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.
In comparison to a human, a killer whale can hold its breath longer and exchange more lung air with each breath. 4.The resting respiratory rate of killer whales at SeaWorld is about three to seven breaths every five minutes.espiration. A killer whale breathes through a single blowhole on top of its head. The blowhole is relaxed in a closed position. To open the blowhole, a killer whale contracts the muscular flap covering the blowhole. A whale holds its breath below water.