Scientific Anglers SONAR Saltwater Clear Intermediate

1.25 ips sink rate. Clear intermediate head. The flats workhorse.

The Scientific Anglers SONAR Saltwater Clear Intermediate is the slow-sinking clear-head fly line built for anglers who fish below the surface but not deep. Most of the time in the salt, you don't need a true topwater line — you need an intermediate that slips just below the surface film and cuts through chop without spooking fish. The 1.25 ips sink rate puts your fly in the strike zone without sinking it past it, and the clear intermediate head delivers low-visibility presentations to wary fish on the flats. Tropi-Core technology means the line stays supple in tropical heat without going limp in cooler water. Six weights cover redfish through tarpon.

Key Features

• Slow 1.25 ips sink rate — flies stay just below surface
• Clear intermediate head — low-visibility presentation to spooky fish
• Tropi-Core technology — built for tropical climates
• Engineered specifically for saltwater use
• Six weights covering bonefish through tarpon
• SA SONAR SW INT WF X I (X = line weight)

Specs

Rigging & Use

• WF-7 / WF-8: bonefish, redfish, schoolie striper
• WF-9: the workhorse line — permit, snook, mid-size striper
• WF-10 / WF-11: tarpon, big striper, GT
• WF-12: trophy tarpon and offshore work
• The clear head is what makes this work for spooky fish — don't lay it across the fish's path, lay it slightly past and let the fly drift back
• Tropi-Core handles 80-90°F flats heat without going limp

Why We Like It

An intermediate line is the workhorse of saltwater fly fishing for a reason — most of the time you want your fly just under the surface, not deep. The SONAR Saltwater Intermediate gets that math right: slow enough to stay in the zone, clear enough to not spook fish in calm conditions. At $99 it's also a value play vs. some flagship intermediates that don't perform any better. The WF-9 is the line we sell most consistently — it covers most Northeast striper and Southeast permit/snook scenarios.