A Florida beachcomber recently made an unusual find: a giant eyeball, the size of a softball. Absent any context, the eyeball found in Pompano Beach caused quite a stir. Early speculation was that it came from a giant squid (Archeteuthis sp.) or a whale. Of course, this still doesn't explain how the eyeball managed to pop loose and float all the way into shore from the deep water locations where those animals are found.
The current consensus among experts is that the eyeball belongs to a swordfish or similar animal. Swordfish are found much closer to shore, and closer to the surface, making it more likely that the eyeball would survive the elements to float into the beach.
Although the eyeball appears quite large on its own, larger than the eye you see on a swordfish, biologically speaking most of the eyeball isn't visible. If you have ever been startled by the size of a glass eye for a human, you are familiar with this phenomenon.