Life in the poles provides insights into the first animals on Earth. According to a recent study, the amazing survival techniques of polar marine creatures may help to explain how the earliest animals on Earth may have evolved earlier than the oldest fossils suggest. These early, primitive, and now
According to the authors, the study demonstrates how certain arctic species are remarkably well-adapted to living on and around the ice.According to a recent study, the amazing survival techniques of polar marine creatures may help to explain how the earliest animals on Earth may have evolved earlier than the oldest fossils suggest. These early, primitive, and now extinct animals may have survived some of the world’s most harsh, cold, and icy periods.
He continues, “Whether it is animals living upside down on the underside of ice instead of the seafloor, sponges living hundreds of kilometers under thick floating ice shelves, organisms that are adapted to live in seawater colder than −2°C, or whole communities existing in the darkness on food sources that don’t require sunlight, Antarctic and Arctic life thrives in conditions that would kill humans and most other animals.
“Just like in Antarctica during the Last Glacial Maximum , the huge amounts of advancing ice would have bulldozed the shallows, making them inhospitable to life, destroying fossil evidence and forcing creatures into the deep sea. This makes the chances of finding fossils from these times less likely and sheltered areas and the deep sea the safest places for life to evolve.”
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