The document describes the author's experience traveling to Cambodia and learning about freshwater dolphins in Asia. They booked a tour on the Mekong River and spotted about six dolphins, which looked different than expected. Later, the author went fishing with a local fisherman and his son to better understand the relationship between the fishermen and dolphins. The dolphins helped the fishermen catch fish and were rewarded with attention and some of the catch. The author found feeding and interacting with the dolphins to be a very interesting and joyful experience.