Question

what is live in water who have bule blood​

Answer 1

Answer:

But the horseshoe crab's blood, rather than its vision, is arguably its most famous feature. The blood contains copper-based hemocyanin to carry oxygen, which gives it a unique sky-blue color. ... But it requires large quantities of horseshoe crab blood, which must be collected from living animals.

Step-by-step explanation:

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Answer 2

Answer:

octopus has the blue blood