Scientific Anglers Sonar Saltwater Full Clear Intermediate Sinking Fly Line
It’s not very often you’ll need to fish topwater flies in the salt. That’s where an intermediate line comes in handy. The Scientific Anglers Sonar Saltwater Full Clear Intermediate Sinking Fly Line features a slow-sinking clear head that cuts through the surface and provides an amazing amount of stealth for those wary fish cruising the flats. From redfish and bonefish to permit and tarpon, give yourself an edge that fish won’t be able to see.
Key Features
- Slow sink rate gets flies just below the surface
- Engineered for use in salt water
- Clear for stealthy presentations
- Tropi-Core technology for tropical climates
- Intermediate sink rate – 1.25 ips
- Great for snook, tarpon, redfish, striper, bonefish and permit
Specifications
| Feature | Detail |
|---|---|
| Sink Rate | 1.25 ips |
| Line Type | Intermediate Sinking |
| Color | Full Clear |
| Environment | Salt Water |
| Technology | Tropi-Core |
FAQ
What makes this fly line suitable for flatwater fishing?
The slow-sinking clear head allows the line to cut through the surface and place flies just below the water’s surface, providing stealth that wary fish like redfish and bonefish can’t easily detect.
Is this line durable in saltwater conditions?
Yes, it is specifically engineered for saltwater use and features Tropi-Core technology designed to resist degradation in tropical and saline environments.
Can this line be used for topwater presentations?
While it’s designed for intermediate sinking, the clear head helps maintain a natural presentation that can work well in surface feeding situations without being visible to fish.

Thomas Peters –
Used this line for bonefish and redfish on the flats. The clear head stayed almost invisible and the 1.25 ips sink rate kept the flies just below the surface. Fish were more willing to take the flies, especially in early morning when visibility is low.
Anna Lee –
Felt like a solid choice for saltwater intermediate fishing. The line sank smoothly and didn’t tangle. Good for tarpon and snook in shallow areas. A bit more expensive than others, but the stealth is worth it.
Amanda Anderson –
Great for stealth fishing in mangroves. The clear line blends in perfectly and the sink rate is consistent. I’ve used it with both dry flies and nymphs and saw better strikes than with my previous line.