Search: scallop; scallop eye
Why: One of the reasons I steer the fuck clear of spiders is because they have 8 goddamn eyeballs, which means they are demon spawn. (I'm not putting a picture here to prove this to you because I don't even want to look at it. Hell, I don't even want to think about it. I was up half the night imagining giant spiders in my room - again. God in heaven.)
Does any other animal have more than 2 eyes? Well, the scallop does, all the way around its shell. And I'm never eating one again.
Answer: Yuuuck. Those aren't blueberries.
Their eyes can't see shapes, but only detect light and motion. They are the only bivalves with eyes.
Source: Google Images
The More You Know: While searching, I saw the biggest spider in history and my heart stopped beating and my blood froze solid and I thought I might die. I still might. It was the size of a cat, or at least a guinea pig. I don't want to live in a world where that goddamn thing exists. Oh god oh god. I hope you're happy.
Anyway, the name "scallop" is derived from the Old French escalope, which means "shell." Here is how the scallop eyeball works, in case you were wondering: