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Scientific Anglers Sonar Sinking Lines

The SONAR series takes your fly and puts it right in front of the fish. Whether you’re throwing streamers for trout, big flies for muskie, or even fishing stillwaters, we have the perfect sinking line for you. Get down, and stay down, with SONAR.

sci_anglers_sonar_titan_full_intermediate Scientific Anglers Sonar Titan Full Intermediate
$89.95
Slow Sinking Fly Line
SMOOTH
~ Intermediate Sink Rate: 1.25ips
For your most heinous flies just below the surface. Stripers, pike, muskies beware.


sci_anglers_sonar_sink_25_cold Scientific Anglers Sonar Sink 25 Cold
$89.95
Sinking-Head Fly Line for Cold Water
SMOOTH
4'-15' at 4-8 ips
Designed with a short 25′ fast-sinking head, the Sink 25 sinking fly line gets flies deep extremely quickly and is paired with a large diameter handling section for excellent line control.


sci_anglers_sonar_sink_30_cold Scientific Anglers Sonar Sink 30 Cold
$89.95
Sinking-Head Fly Line for Cold Water
SMOOTH
4'-15' at 4-8 ips
Designed with a short 30′ fast-sinking head, the Sink 30 sinking fly line gets flies deep extremely quickly and is paired with a large diameter handling section for excellent line control. When it’s time to get down and dirty, the Sink 30 has your back.


sci_anglers_sonar_sink_30_warm Scientific Anglers Sonar Sink 30 Warm
$89.95
Sinking-Head Line for Warm Water
SMOOTH
4'-15' at 4-8 ips
Get down fast with the 30′ sinking head without fearing for your life while casting.


sci_anglers_sonar_sink_30_clear Scientific Anglers Sonar Sink 30 Clear Tip
$89.95
Sinking Clear-Head Line for Cold Water
SMOOTH
Intermediate 1.25 ips
Our SONAR Sink 30 Clear fly line offers the same casting benefits of the SONAR Sink 30 taper, but substitutes a 30′ slow-sinking clear head. When stealth isn’t an option, the best choice is to go clear.


sci_anglers_sonar_sink_tip Scientific Anglers - Sonar Sink Tip Type III
$89.95
Multi-Situation Taper Sinking Tip
SMOOTH
~ 2.5 - 4.25 ips


sci_anglers_sonar_sink_tip Scientific Anglers - Sonar Sink Tip Type IV
$89.95
Multi-Situation Taper Sinking Tip
SMOOTH
~ 3.75 - 5.25 ips


sci_anglers_sonar_sink_tip Scientific Anglers - Sonar Sink Tip Type V
$89.95
Multi-Situation Taper Sinking Tip
SMOOTH
~ 5.5 - 6.5 ips


sci_anglers_sonar_titan_h_s2_s4 Scientific Anglers Sonar Titan Hover/S2/S4
$89.95
Triple Density Sinking Fly Line
TEXTURED
~ 1.00 - 5.0 ips
Get this: we took one of our most popular tapers, the Titan, drenched it in various mixtures of tungsten powder, and created a triple-density sinking fly line that will absolutely change the way you fish streamers forever.


sci_anglers_sonar_titan_int_s3_s5 Scientific Anglers Sonar Titan Int/S3/S5
$89.95
Triple Density Sinking Fly Line
TEXTURED
~ 1.25 - 6 ips
Casts like a floating line, sinks like nothing you've ever seen.


sci_anglers_sonar_titan_s3_s5_s7 Scientific Anglers Sonar Titan S3/S5/S7
$89.95
Triple Density Sinking Fly Line
TEXTURED
~ 2.5 - 8 ips
Get this: we took one of our most popular tapers, the Titan, drenched it in various mixtures of tungsten powder, and created a triple-density sinking fly line that will absolutely change the way you fish streamers forever.


sci_anglers_sonar_titan_clear_tip Scientific Anglers Sonar Titan Clear Tip
$89.95
Sinking Clear-Tip Fly Line
TEXTURED
Float / 1.25 ips
The SONAR Titan Clear Tip fly line provides all the advantages of our Titan taper—easy loading and effortless turnover to name a few—and tops it off with an intermediate sinking clear head.


sci_anglers_sonar_titan_sink_tip Scientific Anglers Sonar Titan Sink Tip !
$89.95
For Easy Casting with Large Streamers
SMOOTH
Sink 3: 2.5 – 3.5ips; Sink 6: 5.5 – 6.5ips
So you know where the fish are holding. You’ve done your research. But you just don’t know how deep they are. Luckily, the SONAR Titan Sink Tip fly line offers a variety of solutions for all of your depth-finding needs.


sci_anglers_sonar_titan_jungle_clear_tip Scientific Anglers Sonar Titan Jungle Clear Tip !
$89.95
Sinking Clear-Tip Fly Line for Jungle Fish
SMOOTH
FLOAT
The SONAR Titan Tropical Clear Tip fly line provides all the advantages of our Titan taper—easy loading and effortless turnover to name a few—and tops it off with an intermediate sinking clear head.

sci_anglers_sonar_titan_tropical_clear_tip Scientific Anglers Sonar Titan Tropical Clear Tip
$89.95
Sinking Clear-Tip Fly Line for Tropical Climates
SMOOTH
Float / 1.25 ips
Who says you can’t be stealthy when you’re chucking streamers and poppers in the heat?


sci_anglers_sonar_titan_big_water Scientific Anglers Sonar Titan Big Water Taper
$89.95
Slow-Sinking Fly Line for Big Game
TEXTURED
~ 1.25 ips
Built on the industry’s first 100-lb. monofilament core, the Titan BWT is the world's strongest fly line and can handle even the world’s largest game fish.


sci_anglers_sonar_titan_big_water_max_sink Scientific Anglers Sonar Titan Big Water Max Sink Taper
$89.95
Fast-Sinking Fly Line for Big Game
TEXTURED
~ 6.0+ ips
Built on the industry’s first 100-lb. monofilament core, the SONAR Titan BWT Max Sink is built for the blue-water beasts of your dreams (or nightmares).


sci_anglers_sonar_stillwater Scientific Anglers Sonar Stillwater Hover
$89.95
For Fishing Flies just below the Surface
~ 1 ips
Built with an extra-slow sink rate, the Hover is downright nasty when it comes to fishing streamers with a slow retrieve. It’s a legend, at least in our own minds.


sci_anglers_sonar_stillwater Scientific Anglers Sonar Stillwater Clear Camo
$89.95
Camouflage Line for Sub-Surface Fishing
~ 1.25 ips
Designed for the unique demands of stillwater angling, the Clear Camo simply disappears beneath the surface, and features a slow, intermediate sink rate to tempt fish sitting just below the chop.


sci_anglers_sonar_stillwater Scientific Anglers Sonar Stillwater Clear Midge Tip
$89.95
For Fishing Flies in or Near the Surface Film
5'Clear Intermediate Tip ~ 1.25 ips
Designed for tossing multiple flies and long leaders to wary fish cruising just beneath the surface, the Emerger Tip’s floating running line and short, clear intermediate tip allows anglers to fish with supreme line control and just enough stealth to get the job done.


sci_anglers_sonar_stillwater_seamless_density Scientific Anglers Sonar Stillwater Seamless Density
$89.95
Double-Density Sinking Lines
~ Intermediate/Sink 3: intermediate (1.25 ips) running line and Sink 3 head (3.0 ips)
~ Sink 3/Sink 5: Sink 3 running line and a Sink 5 (5.0 ips) head
~ Sink 5/Sink 7: Sink 5 running line and Sink 7 (7.0 ips) head, designed to dredge the bottom
With a variety of double-density sinking rates and a smooth, seamless transition between each, the SONAR Stillwater Seamless Density lines provide straightline connections to subsurface flies, meaning you’re in control of the fly every second it’s in the water.


sci_anglers_sonar_stillwater_seamless_density Scientific Anglers Sonar Stillwater Parabolic Sink
$89.95
Sinks in a U-Shaped Profile
~ Sink 3 running line, Sink 5 head, and a Sink 3 tip
These lines sink in a U-shape through the water column, suspending flies just below the bottom and creating enticing action with each strip.


sci_anglers_sonar_stillwater_booby_tip Scientific Anglers Sonar Stillwater Booby Tip
$14.95
Floating Tip for Suspending Flies off the Bottom
~ Float
We created a 5-foot floating Booby Tip that attaches to the end of any sinking fly line with a loop-to-loop connection, providing enough flotation to suspend Booby flies just above the bottom, away from any snags, right where the fish will be looking for them.


sci_anglers_sonar_custom_tip Scientific Anglers Sonar Custom Tip
$89.95
Custom-Cut Sinking Fly Line
SMOOTH
~ 7.75 ips
This cut-to-fit fly line allows you to slice off as much line as you need to fit everything from a 7-weight through a 15-weight.