本书介绍了人类起源于大海、北美五大湖，形形色色的岛与泉，金特的宝藏之来历，鲑鱼为何能千里迢迢返故乡，重水对生命产生抑制作用等海洋知识。(This book introduces that human date from the sea, Five Great Lakes Island, various islands and springs, the origin of Quint’s treasure, why the salmon can go back hometown a thousand miles away, heavy water has inhibiting effects on life’s generation and other ocean knowledge.)