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.
How long can a common bottlenose dolphin hold its breath? On average, a common bottlenose dolphin can hold its breath for 5 - 7 minutes. How does a dolphin sleep? Because they are air-breathing mammals living in the water, dolphins cannot sleep the way that you and I can.