Thumbnails. No border: thumbnail links to a 640 pixel image. Pink border: thumbnail links to bigger image. Blue border: left hand half of thumbnail links to bigger image; right hand half links to image description on the Wikimedia Commons.
Monterey Bay Aquarium
Jellies
They call these just "jellies", not "jelly fish" because, however big they are, they still count as plankton: sea animals incapable of swimming against a current.
Not a jelly but Roger's face repeated multiple times in a demonstration of jelly symmetry.