Protecting the ocean has become their shared mission: Diving scientist Yang Hongqiang has trekked across over a hundred islands and reefs in the South China Sea, dedicating himself to coral reef research and conservation. Zhan Chunpei, China's first female captain of an ocean-going official vessel, stands by her vow to "make navigation safer and the ocean cleaner." Global sailor Xu Jingkun practices low-carbon sailing amidst his extreme voyages... The ocean is our home—let's take action to protect it!