Known as the 'Mother of Sharks,' I'm a Latina marine biologist who has a lot of labels: science communicator, conservationist, author, educator, podcaster, television presenter. You might have seen me on Discovery Channel's Shark Week, National Geographic, BBC Wildlife, heard my TEDx talk or read my Scholastic books.
, to put it into perspective). And during this timespan, Earth and its inhabitants have experienced monumental transformations, but sharks have remained remarkably consistent in both their biology and body shape. This unchanging nature has long puzzled scientists, but a, uniting experts from Germany, Australia, Sweden, and the United States, has unveiled the extraordinary secret behind the shark’s enduring legacy.
The low mutation rate observed in epaulette sharks may be attributed to various factors. One potential reason is their poikilothermic nature, which is characteristic of cold-blooded animals with a low metabolic rate. This, in combination with effective purifying selection within a species boasting a substantial long-term population size, acts to remove slightly harmful mutations.
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