Horseshoe crabs have weird, bright blue blood

6 Jun

Reblogged from Grist:

Click to visit the original post

Horseshoe crabs have bright blue blood. They are like aliens. (Does this one not look like a dead alien?) Nature, you are weird.

Robert Krulwich explains why the crabs’ blood is so beautifully blue:

Their blood kind of sloshes around in their bodies carrying oxygen to various organs, as our blood does.

Our blood is red because we use hemoglobin to move oxygen around.

Read more… 213 more words

One Response to “Horseshoe crabs have weird, bright blue blood”

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