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A series of lines that can cover just about any situation you’ll encounter in a stillwater environment, the Sonar Stillwater Seamless Density Sink Lines from Scientific Anglers give a straight-line connection at nearly any depth. Made in three separate densities (Intermediate/Sink 3, Sink3/Sink5, and Sink5, Sink7), this is a family of lines that you can count on whether you’re dragging nymphs in shallow water, hitting the middle water column with a leech pattern, or fishing a deep-water chironomid rig. A versatile series of fly lines, the Sonar Stillwater Seamless Density Sink Lines cover a wide range of stillwater applications and are a safe bet whether you’re casting from a boat or working your way along a shoreline. Year-round performance and a taper that makes casting and presentation a breeze, the Sonar Stillwater Seamless Density Sink Lines are a solid addition to any stillwater angler’s bag of tricks.



SA Line ID, Advanced Shooting Technology, Shooting Texture, Sonar Sinking Technology, and Seamless Density – Available in quite a few line weights and density options, this is a line that’s easy to have multiples of, and to prevent you from grabbing the 4 weight line and a 7 weight rod, Scientific Anglers utilizes their SA Line ID. This is an integrated identification system found at the first 1’-2’ of the line’s tip. Made to hit those far targets and hold its own for seasons to come, Scientific Anglers combines their Advanced Shooting Technology (AST) with their Shooting Texture. With their AST, this line gets a patented dry-slick technology that reduces friction in order to increase distance, while it also repels dirt and grime to prevent damage and keep things clean. To further increase durability and casting performance, SA uses their Shooting Texture Technology, which consists of a unique series of hemispherical divots that provide the benefits of a textured line without the feel of it. Whenever you’ve found the depth that the fish are hanging, you can thank Scientific Anglers’ Sonar Sinking Technology for keeping your fly there. Utilizing a proprietary tungsten formula and unique tapering, Sonar Sinking Tech works to quickly sink your flies while keeping them in the strike zone longer. Scientific Anglers also uses their Seamless Density to maintain a straigtht-line connection, no matter how deep the drop-off might be. Seamless Density is a combination of densities with a smooth transition between them. This provides constant contact with your fly without hinging and a straight-line connection that’s, well, seamless.



Nymphs, Streamers, and Midges – From throwing large articulated leeches to small chironomids in the film, this line can do it all. Overweighted by two line weights with a taper that effectively loads most rods, this series of lines is versatile enough to present any fly in your box.



Cold/Moderate – Designed to fish all stillwater trout situations, this line performs best in cold to moderate water temperatures. This allows you to fish year-round, and when you find yourself on a farm pond that’s loaded with bass and panfish, you can turn to this line without fear of it getting soft and turning limp.



More Mass Towards the Front of the Head – Based on their MPX taper, Scientific Anglers’ Sonar Stilwater Seamless Density Lines are overweighted by two line weights and have a taper that places more mass towards the front of the head. This allows you to quickly load even the fastest rods while letting you get those few extra feet of distance that sometimes makes the day. Built with a versatile taper, these lines are nice and easy to cast, and the addition of a textured hang marker at the ten and twenty feet points lets you further finetune your presentations and prepare to connect with those fish that hit just before the end of your retrieve.


More Info 

Best for: Stillwater, Trout

Loops: Front Loop (Leader to Fly Line Connection) and Back Loop (Backing to Fly Line Connection)

Sinking/Floating: Intermediate/Sink 3, Sink3/Sink5, and Sink5, Sink7

Line Size