Why do fish have eyes?
If they didn't have eyes, they wouldn't be fish. They would be FSH instead!
Why do most deep sea fish have small eyes or none at all while mid water fish such as the lantern fish have big eyes?
fish in the deep water are under high pressure so their eyes are smaller so they don't pop from pressure change. They may have no eyes because there is no light down there at all. The lantern fish has big eyes because it is able to see light with its lantern like bulb. The ability to see comes with big eyes to see the animals that come towards it around it because there is light…