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‘Living fossil’: the blue-blood arthropod that has changed little in 445m years

Horseshoe crabs, often called living fossils, have remained unchanged for 445 million years. Their blue blood plays a vital role in vaccine safety and testing, but rising sea levels pose a significant threat to their habitats.

The Guardian· Aug 11, 2026 · 1:21 PM · 1 views

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Horseshoe crabs, often called living fossils, have remained unchanged for 445 million years. Their blue blood plays a vital role in vaccine safety and testing, but rising sea levels pose a significant threat to their habitats. Full story and more reels: https://newsreel.video #news #breaking #horseshoecrabs #marinebiology #conservation

Originally reported by The Guardian. Read the full story →

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