Everything a humpback whale is about size. Length: up to 17 m (55 ft); Weight: up to 40,000 kg (88,000 lbs); A Large pectoral flipper, up to 1/3 length of body; and a tail fluke up to 5 m (15 ft) feet across. It would be possible to lay two dolphins nose to nose across the tail fluke of an adult humpback whale. Over the past five years humpback whales sightings have increased from four or five a day to twelve to fifteen. Tail lobbing, lunge feeding and tail fluking are common. It does not matter how often you see that tail come out of the water it is amazing.