Changing Seas
Until recently there was scientific consensus that sponges were the first animals to branch off the “Animal Tree of Life,” a kind of family tree for all living and extinct animals on earth. But recent DNA research has cast doubt on that theory, with some scientists suggesting that ctenophores, also known as comb jellies, are an older lineage.
运行: 27:14 分钟
质量: HD
第一次约会: Jan 27, 2009
上次播出日期: Jun 29, 2022
插曲: 56 插曲
季节: 14 季节
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