When it refers to buy sunglasses for fishing. polarized sunglasses are the best choices. Compared common sunglasses, polarized sunglasses not just shield your eyes from UV rays in sun, but also filter glares from water surfaces so as to prevent glares into your eyes, thus give you more clear vision under water. As for the lenses color for the sunglasses, you can choose browm, Amber or grey colored lenses. they are the most comfortable colored lenses for eyes, and can provide you with the orignial color of sunbjects.
I also like go fishing and i think the most annoying thing is the glare coming off the surface of the water would dazzle my eyesight. Then my friend suggested me Oakley or Costa Del Mar sunglasses. Then I got Costa Del Mar and I can enjoy my fishing more now. The clarity, polarization, and color enhancement is fantastic. They are made of memory metal material so if you sit on them, the pressure will not not brake them.