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.
In freezing water, the breathing rate is slower to keep the warm air inside. Sperm whales dive at over 1,200 m (3,600 ft) depths and Cuvier's beaked whale (a type of toothed whale) holds the record for diving amongst any sea mammal: 1,900 m (6,330 ft) (this means 190 atmospheres) for one hour and 25 minutes.