Humpback whales are identified by the underside and trailing edge of their tail flukes; each one is different just like a fingerprint. In British Columbia humpbacks are given a letter as part of their identification to categorize their fluke based on color. X animals have mostly black tails with less than 20% white on their fluke, Y animals have a fluke that is 20-60% white, while Z animals have more than 60% of their fluke white. Humpback whales often show these tails, or ‘fluke’ while diving, making them ideal candidates for photo-identification projects. This photo is of a humpback that we frequently see on our whale watching tours, it is called ‘Guardian’.