https://usefulbs.com/blog/why-do-some-deep-sea-fish-have-completely-transparent-heads
Why do some deep-sea fish have completely transparent heads? | UsefulBS
Oct 8, 2025 - It's not science fiction—some fish have a completely see-through head that allows their eyes to look straight up through their own skull, and the reason for it...
deep sea fishcompletely transparentheads