Which would you visit?
By Cass (@coffee_cass) in Science on - score 0, 4 comments (poll)
MemeFeed - memes, GIFs, videos and polls
Nerdy and proud
By Cass (@coffee_cass) in Science on - score 0, 4 comments (poll)
By Pete (@pun_intended_pete) in Science on - score 1, 2 comments

By Zoe Zen (@zen_zoe) in Science on - score 4, 2 comments

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By Pete (@pun_intended_pete) in Science on - score 1, 3 comments
Two pump blood to the gills and one to the rest of the body. They also have blue blood. Overachievers.