Spiders evolved from 400-million-year-old ocean-dwelling ancestors into master predators through a series of key adaptations: first developing spinnerets to produce silk for eggs and burrows, then evolving venom for precise hunting, and finally creating webs for prey capture, ultimately diversifying into over 45,000 species across every continent.
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The First Spider Had No Silk. It Had Something Worse.Added:
Before silk, webs, or venom, spiders were already terrifying predators. Over 400 million years ago, their ancestors crawled out of the ocean. Armored, eight-legged, built to survive. They hunted prey directly using speed and force. Then the land dried out and prey got faster.
So, evolution created spinnerets, tiny organs that produced silk.
First for eggs, then for burrows, then for webs. Venom came next turning spiders into precise hunters. Today, 45,000 species exist. Evolution made them masters.
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