There is much confusion surrounding different colors and types of line as they relate to being able to be seen underwater. While nothing is certain, there are some key truths for anglers looking for the best line for each fishing situation. Fluorocarbon is the line that is most invisible underwater, while braided line is the strongest, yet most visible above water. The same can be said about highly visible colors such as yellow and red. They are easy to see above water and help you detect bites from fish, but they are more likely to be seen underwater by wary fish.
Source: Fix.com Blog