Stay stealthy on the flats with the Scientific Anglers Sonar Saltwater Intermediate Fly Line — designed to fish just below the surface where wary saltwater species feed. When topwater action slows or fish are cruising in shallow water, this intermediate line keeps your flies in the strike zone with minimum visibility and maximum control.

Built with a slow-sinking clear head, this line disappears into the water, helping you present streamers, crustaceans, and other patterns right where fish hold — ideal for bonefish, redfish, permit, tarpon, and more in warm and tropical saltwater environments.

Key Features & Benefits:

• 🪶 Intermediate sink rate (~1.25 ips) keeps your fly just under the surface for subtle presentations without excessive depth.
• 🔍 Clear head for stealth — reduces visibility on shallow flats so even wary fish stay unaware of your line.
• 🌡️ Tropi-Core technology resists heat-induced limpness, making it ideal for warm and tropical climates.
• 🎣 Versatile saltwater performance — perfect for cruising species in flats, shallow bays and nearshore waters.
• 🔗 Welded loops & SA Line ID on both ends for easy rigging and quick identification when swapping setups.