The membrane is. SOME problems with it are too.
The nictitating membrane is the transparent layer the covers the outside of a frogs eye. Frogs have a so-called Nictitating membrane, which they can slide over their eyes for protection. They do this while jumping and swimming.
The nictitating membrane.
Nictitating membrane
Nictitating Membrane
depends on the species.
The nictitating membrane is part of a frog's eye. It is just above the lower lid and acts as a protective third eyelid.
It's called the Nictitating membrane
A nictitating membrane The nictitating membrane is the THIRD eyelid, the SECOND eyelid that you asked about is just that, the eyelid, just like in humans
With the nictitating membrane, which keeps it moist
The color of the nictitating membrane, also known as the third eyelid, varies among different species. In many animals, it can range from translucent to white or pinkish in color.
nictitating membrane
The nictitating membrane