Our One Ocean: a story in time

All life on earth first began in the sea, but how long ago? Approximately when might it have it happened? How closely are humans related to fish? Some of these questions are answered through the colorful illustrations in Our One Ocean. This book introduces children to the story of our ocean, and explains why we must celebrate and treasure our water that covers more than 70% of the earth surface. For children ages 6 to 10.