changes in the Earth's orbit, ocean currents, and carbon dioxide levels 地球轨道、洋流 和二氧化碳水平的变化
creating the space for new ocean currents... 为新的洋流创造了空间
The growing abundance soon spilled out to the wider ocean... 不断增长的丰富资源 很快蔓延到更广阔的海洋
as they instinctively head towards the ocean. 它们本能地朝着海洋前进
But by the time they'd conquered the seas, the ocean was home to deadly predators. 但当它们征服大海时 海洋已经成为致命捕食者的家园
creating a vast ocean on one side of the world... 在世界的一边形成一片广阔的海洋