"The white dolphin population in Sanniang Bay is likely the only healthy one. As long as there is a certain level of gene exchange with populations in Guangdong, in a few decades, the number could increase to 500, the peak capacity this area can support," he said.

"Every life form has taken millions of years to evolve. While many things can be re-created if lost, once a species disappears from the planet, it can never be re-created."

The couple believes that only by protecting a species can the research conducted on it be meaningful. They refer to their approach to observing and protecting the white dolphins as "conservation biology".

Today, the house where the Pan family resides has been designated as the Life Education and Chinese White Dolphin Research Conservation Center of Qinzhou Beibu Gulf. Upon entering, a wall-sized map of Sanniang Bay clearly marks the activity area of the Chinese white dolphins. During summer and winter vacations, Pan Yue's family arranges for students from across the country to visit Sanniang Bay for educational tours to learn about the white dolphins and cultivate positive attitudes toward protecting wildlife.

The village government has also organized sea excursions for visitors, not only increasing local incomes, but also raising awareness about this special neighbor.

Contact the writers at yandongjie@chinadaily.com.cn