Floating crab flies have figuratively and literally been on the rise and the Rainy's Floating Flotsam Crab Fly is an excellent addition to any flats angler's fly box. You would typically think of crabs as bottom dwellers, but there are various crab species that will swim in ranges from mid water column to the surface. When permit and bonefish key in on these swimming crabs a floating crab fly like the Rainy's Floating Flotsam Crab Fly is an excellent one to have. The proprietary 3mm Cross-Link foam Rainy's ties these with is super durable and floats effectively.