To celebrate their 40th Anniversary Seaguar is giving away a 'Hot Green Shark Tooth' with the Seaguar 40th Anniversary logo with the purchase of two (2) spools of Seaguar Premier Fishing Line.
Naturally, a good fishing line must be hard for a fish to see. The standard for judging a line's visibility must be based upon its performance in water. The closer a line's ratio of refraction is to that of water, the more difficult it is for the fish to see the line. Seaguar's light refraction ratio is 1.42, only 0.09 different from that of water. On the other hand, the light refraction ratio of nylon is between 1.53 and 1.62. Now you can understand why we call Seaguar the fishing line fish can't see.