For saltwater fishing, blue and clear color, 547yds / Coil. Mono Nylon Fish Line designed for saltwater fishing using spinning, casting, and trolling reels. SHADDOCK Mono Fishing line. HIGH TENSILE STRENGTH & SHOCK STRENGTH – Shaddock Mono Fishing Line’s extra stretch and lower sinker rate makes it great for fishing and provides more forgiveness during hooking and fighting, has good shock strength for sudden impacts.