Legendary oceanographer Sylvia Earle and a cast of pioneering marine scientists tell the story of the incredible work being undertaken across the planet to protect the fragile ecosystem of our oceans. Perpetual Planet: Heroes of the Oceans is a showcase of the wonder of the sea, of the living laboratory we all live in and of the vital science being carried out beneath the waves...。跟随作家丹·巴特纳环游世界,探索五大奇特社区,那里的人们不仅健康长寿,而且过着充满活力的生活。。