Just to appreciate the scale, we're showing you a giant
squid's eye, detached, sadly, from its former owner. Giant squid have the
largest eyes in the world, according to the Smithsonian National Museum of
Natural History
We're not letting you off the hook without having to look at
a spider. Sorry, arachnophobes! Jumping spiders can see with three different
sets of eyes. Wide-angle side eyes detect distant movement; two large eyes on
the head extend to provide telephoto vision for tracking prey, & four
additional side eyes observe movement all around them.
Deer flies have stunners for eyes. Careful getting too
close, though: they can bite with vengeance.