A Deep-Sea News reader D. White sent this photograph in yesterday. The picture is from a fish market in Yilan, Taiwan of 33 giant eyes on ice. White and I are not clear what fish they are from. But after some internet searching and asking his students, he came up with tuna eyes. Apparently, they are commonly eaten in Japan.
it tastes a bit like squid and the eyeball comes surrounded by fish fat and severed muscles that are also meant to be quite tasty. To cook, you simply boil it and then season to taste.
UPDATE: FishGuyDave (fish expert who always lurking around ready to call BS on any DSN claims, we love FGD) comments below
these look more like the eyeballs of swordfish than tuna — their skin color around the eyes is a deep dusky brown (like these) instead of the light tan or white around the eyes of tunas. Besides, these look more the size of swordfish eyes.