A spearfishing knife is one of the most important safety items in a diver’s kit — used for cutting entanglements, dispatching fish humanely, prying, and emergency situations underwater. Every spearfisher should carry a knife on every dive, mounted accessibly on the leg, arm, or weight belt where it can be reached with either hand in an emergency. This category covers dive knives and iki spikes for freediving, spearfishing, and underwater sports — in titanium, stainless steel, and combination blade configurations.

Important — Shipping Restrictions

Due to transport regulations governing bladed items, all knives in this category can only be shipped within the European Union by ground shipping (road or rail) — air freight is not available for knife orders within the EU regardless of destination or order value. EU customers should allow additional delivery time compared to standard shipping estimates. Orders outside the EU are subject to the import regulations of the destination country — it is the customer’s responsibility to confirm that importation of bladed items is permitted under local law before ordering.

Blade Material — Titanium vs. Stainless Steel

Titanium — Completely corrosion-resistant in both salt and chlorinated water — will never rust regardless of maintenance frequency. Significantly lighter than stainless steel at equivalent blade size. Holds a functional edge well for diving applications. The premium choice for divers who prioritise zero-maintenance corrosion resistance and minimal weight on the leg or arm

Stainless Steel (316 / 420 grade) — Holds a sharper and longer-lasting edge than titanium — easier to sharpen in the field with a standard whetstone. Heavier than titanium. Requires rinsing and occasional drying to prevent surface corrosion in salt water over time. The most widely used material across the full price range of dive knives — excellent performance at every budget level

Blade Edge Types

Straight edge — Clean slicing cuts — ideal for cutting fishing line, monofilament, and netting with a single draw. Easiest to maintain and resharpen in the field

Serrated edge — Cuts through rope, kelp, rubber, and tough fibrous materials that a straight edge slides across. Harder to resharpen but extremely effective on woven and braided materials

Combination edge — Straight edge on one portion of the blade and serrated on the other — the most versatile configuration for spearfishing where both line cutting and tough material cutting are required. The most popular choice for general spearfishing use

Line cutter / blunt tip — A recessed hook-style cutter built into the spine or heel of the blade — cuts monofilament and braid safely without a pointed tip. Found on many dive knives as a secondary feature alongside the primary blade

Iki Spikes — Humane Fish Dispatch

An iki spike (also called an iki jime spike or brain spike) is a purpose-designed pointed tool used to dispatch fish instantly and humanely immediately after a shot — by inserting the spike precisely into the fish’s brain cavity. The iki jime technique, originating in Japan, causes immediate brain death — eliminating stress hormones and lactic acid that build up in fish killed by conventional methods, and significantly improving the flavour and texture of the flesh for table quality. For spearfishers who take fish for eating, an iki spike is the mark of a responsible and serious hunter — quick, clean, and producing the highest possible quality catch. Iki spikes are typically mounted on the speargun, weight belt, or carried in a sheath alongside the dive knife.

Mounting Options

Leg mount — Strapped to the lower leg or calf — the most common mounting position for spearfishing knives. Accessible with either hand and out of the way during swimming and fin kick

Arm mount — Strapped to the forearm or upper arm — popular with spearfishers who prefer not to have anything on the leg. Fast to draw with the opposite hand

Weight belt mount — Clipped or slid onto the weight belt — accessible at the hip. Practical when a leg mount is not preferred, though slightly less accessible in an entanglement emergency

BCD / harness mount — For scuba divers — mounted on the BCD shoulder strap or chest D-ring for immediate accessibility

Care and Maintenance

Rinse your dive knife thoroughly in fresh water after every session — salt water left on even stainless steel accelerates surface oxidation over time. Dry the blade before storing and apply a light coat of silicone or food-grade oil to stainless blades for long-term storage. Inspect the sheath locking mechanism regularly — a knife that releases from the sheath unintentionally underwater is a hazard. Keep the blade sharp — a dull knife requires more force to cut and is significantly more dangerous in an entanglement situation where speed and control both matter.

Brands in This Category

Pelengas — Ukrainian manufacturer renowned in the spearfishing world for producing high-quality, battle-tested spearfishing equipment. Pelengas knives are built for serious working use in the water — robust stainless steel construction, practical blade geometry, and reliable sheath systems designed for the demands of regular open water spearfishing

Meister — Precision-engineered dive knives from a brand with a strong following among technical freedivers and spearfishers. Meister knives reflect the same attention to quality and performance detail found across the brand’s full equipment range — purpose-built tools for divers who do not compromise on the equipment they carry in the water

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