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.
They are long-lived, also, with an average lifespan of 110 years. The blue whale is also one of the largest animals in the sea, capable of making noises as loud as a jet engine - though at frequencies too low for a human being to hear.