The Indo-Pacific humpback dolphin is protected at the highest level in China, but its numbers are dwindling fast. In Hong Kong, where the species is affectionately known as the Chinese white dolphin, only 37 individuals remain. Their struggle for survival pits them against massive development projects and fishing vessels because dolphins use sonar - not sight - for survival. How can we mitigate the cacophony in Asia’s oceans to help keep vulnerable species like the Chinese white dolphin safe from harm?