Sharks have been populating the oceans for about 400 to 500 million years. While our planet and many of its inhabitants have undergone massive changes several times during this period, this basal group of vertebrates has remained somewhat constant. Their body shape and biology has hardly changed since then.
retrieved 23 October 2023 from https://phys.org/news/2023-10-genomic-stability-double-edged-sword-sharks.html
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