Using fluorocarbon makes your riggings more discreet. This line is almost invisible underwater, thanks to its refraction index that is close to that of water.
RIKIMARU Fluoro Fishing Line, 100% Fluorocarbon 6 lb/0.23 mm/300 yds, clear
RUNCL PowerFluoro Fishing Line, 100% Fluorocarbon 20 lb - 300 yds, Clear
Fishing Line 100% Fluorocarbon 25 M
P-Line 100% Fluorocarbon Fishing Line – Japanese Fluorocarbon, Invisible, High Knot Strength & Low Stretch for Maximum Sensitivity | 2lb-250yds | Clear
X-Line 100% Fluorocarbon Mainline Carp Fishing Line 600m All Breaking Strains
Gardner Tiger Line 100% Fluorocarbon 16lb or 20lb - 200m or 600m Spools
