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The main purpose of eyelids is to moisten the surface of the eye, which in terrestrial vertebrates (like you and I) is nessesary to provide the eye with lubrication to move. Underwater, the eye is lubricated by the water, and kept moist without effort, thus the eyelids are not present because they don't need to be there.
Interestingly, although it may seem that eyelids are the norm, the majority of species with eyes don't have eyelids. Insects for example.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoThey don't have eyelids because the water they live in bathes their eyes.
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Do goldfish close there eyes when they are sleeping?
fish dont have eyelids
Do goldfish yawn?
goldfish do not have eyelids therefore they cannot blink.No.
Do goldfish close their eyes?
They can not. They do not have 'eyelids'.
Do taipans have eyelids?
no they dont have eyelids
Are goldfish nocturnal?
me, being as thick as i am, dont know what nocturnal means. But goldfih are awake in the day, and sleep at night. Make sure u turn tank lights/room lights off because they dont have eyelids and cant sleep aswel in the lightThat answer your question? :DNo, goldfish are diurnal.
What do you know about bees?
they dont have eyelids
Does a goldfish dream?
No, they never go to sleep because they have no eyelids. They just sit in the water and rest instead of sleeping. They do not have eyelids because eyelids keep your eyes moisturized, Under the water they have all the moisture they need.
Do whales and sharks have eyelids?
Whales and sharks dont have eyelids because instead they metmorphisize
What fish can blinks both eyelids?
Shark
Why don't snakes close their eyes?
Snakes dont have eyelids. They havean immobile, transparent scale over their eyes instead.
What special interesting feature does a snake have?
They dont have eyelids
What is similar about the eyes of a goldfish and the eyes of the snake?
They don't have eyelids- I think they have a portective lens that protects their eyes- something like that.
