Can fish-shooting glasses really see underwater fish?

Fish-shooting glasses, that is, polarizers, can't see fish under water.

Fish-shooting glasses can block dazzling glare caused by scattering, refraction, reflection and other factors, and completely block ultraviolet rays harmful to human eyes, but they can't penetrate the river and see the fish under water clearly.

After natural light is filtered by the eyes of the fish, only one direction of light can pass through, which can protect the eyes from the interference of those messy lights. Ordinary polarized sunglasses on the market are made of fiber-sandwiched polarizing films. It is different from optical glass polarized sunglasses because of its soft texture and unstable arc bending. After the lens is assembled on the frame, it is difficult for the lens to reach the optical refractive standard, and the visual image is loose and deformed.