Best Divers' Knives & Shears for Line Cutting Underwater (2026)
We evaluated knives and shears on blade material, tip design, handle ergonomics, sheath retention and overall value using product specs and user-rated reliability
This roundup covers divers' knives and shears optimized for cutting line and performing entanglement rescues underwater, ranked by fit and value for recreational and spearfishing use. Selections emphasize blade material, tip style, handle ergonomics and sheath retention to reflect real-world cutting needs below the surface
Top Picks
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1
Cressi Skorpion Divers' Knife with tempered blade
Diving knife with tempered AISI 304 steel blade, smooth and serrated edges, and wire cutter. One dual-edged blade design with a blunt/pointed tip option; includes a secure sheath. Customers note solid build and sharp edge, with some rust concerns after first use
- tempered blade
- dual-tip blade options
- integrated wire cutter
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2
Cressi Skorpion diving knife with dual-edge blade
Diving knife with tempered AISI 304 steel blade, smooth and serrated edges plus a wire cutter. Features a pointed and blunt tip option and a 9.125 in total length; includes a secure sheath. Users note solid build and sharp edge, with some rust concerns after first use
- dual-edge blade with wire cutter
- tempered stainless blade
- two tip options (pointed/ blunt)
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3
Cressi Borg Long Blade Diver Knife
A modern, tempered 304 stainless steel dive knife with dual-edged blade and serrated section for line cutting. Ergonomic handle designed for secure grip with gloves; features a small technopolymer thumb tab separating blade and handle
- dual-edged straight and serrated blade
- ergonomic, glove-friendly handle
- temper and stainless steel construction
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4
Tanu Dive and Rescue Knife with Sheath
Divers' knife with blunt tip, 304 stainless blade and line cutter. Secure rubberized handle with finger stop for safety; versatile for diving, fishing, or paddling. Customers note rust resistance, solid build, but mixed grip/sharpness on arrival
- blunt-tip design for safety
- versatile blade (straight and serrated)
- secure grip with finger stop