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  • - [Narrator] For over 200 million years

  • these creatures have roamed the Earth,

  • but now their future is uncertain.

  • This is the American horseshoe crab.

  • Found along the Atlantic coastline of North America,

  • the American horseshoe crab spends the majority of its time

  • in shallow waters but comes to shore to mate.

  • The crab has 10 eyes, the two most obvious ones

  • are on the top of its shell

  • but the others are on the tail and near the mouth.

  • Horseshoe crabs are harvested for their blood

  • which has helped prevent illnesses across the globe;

  • but with the development of their natural habitat

  • and over-harvesting, this once abundant animal

  • has now seen such a rapid decline in numbers

  • that they are considered a vulnerable species.

  • This is the American horseshoe crab.

- [Narrator] For over 200 million years

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これらのカニは恐竜の前から這っていた (These Crabs Have Been Crawling Before the Dinosaurs)

  • 30 2
    許大善 に公開 2021 年 01 月 14 日
動画の中の単語