The work is a picture book of popular science Yangtze finless porpoise. The finless porpoise is the only remaining cetacean in the Yangtze River and is known as the giant panda in the water. The work mainly from the past, present and future three aspects of the Yangtze finless porpoise, to the public science of the Yangtze finless porpoise, to express the attitude of protecting the finless porpoise, to protect the clean home, to establish a new style, to protect nature.