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.
Mystery of how sperm whales hold their breath for 90 minutes solved as scientists discover the key is unique protein in their blood.
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.