A humpback whale breathes air at the surface of the water through two blowholes which are located near the top of head. It blows a double stream of water that can rise up to 4 meters above the water.

　　The humpback has a small dorsal fin located towards the tail flukes about two-thirds of the way down its back. Other distinguishing features include large pectoral fins, which may be up to a third of the body length, and unique black and white spots on the underside of the tail flukes. These markings are like fingerprints:　no two are the same.

　　Humpback whales live in large groups. They communicate with each other through complex “songs”. Quick Facts

　　Size: 14m—18m in length;

　　30—50 tons in weight

　　Living

　　environment: Open ocean and shallow coastline waters

　　Migration: From warm tropical(热带的)waters, where they breed, to cold polar waters, where they eat

　　Diet: Shellfish, plants and fish of small size

　　Hunting: Sometimes in groups, in which several whales form a circle under the water, blowing bubbles that form a “net” around a school of fish. The fish are then forced up to the surface in a concentrated mass.

　　Current

　　state: Endangered:　it is estimated that there are about 5000—7500 humpback whales worldwide.

　　1. According to Quick Facts, a humpback whale　.　

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