Scuba diving is quite an exhilarating sport, and over the years, scuba divers have found more and more activities to engage in while doing what they love. However, there may be more important things to tick off the list before thinking about what to do or discover next under the water. This includes protective gear and tools from diving masks, snorkels, scuba tanks to fins; the list is long. This list wouldn’t be complete without an adequate diving knife that would help in emergency situations. It’s a highly important safety instrument that would keep the avid diver at ease while in the water. Remember, you’re under the sea, in marine territory, you need to gauge up. If for any reason, you get caught or stuck in something, an adequate diving knife would be the only ticket to seeing dry land again. We will be exploring some of the best scuba diving knives on the market today.
The Best Diving Knife
The Snake Eye Tactical Dive Knife is one beautifully crafted tactical knife you’d want to have onboard in case of any silky situation. Rocking an all stainless steel body, it can viably be taken into all sorts of water without the fear of rusting or getting blunt. The price is quite considerable as well, nothing that one would cry over if the knife happened to get missing. With razor-sharp edges, there’s no doubt about how easily it would slice through seaweed, reads or rope.
The sharpness goes two ways with this double-edged knife, either side would efficiently cut through any entanglement elements. The strong and durable blade and handle are well-chiseled and streamlined, it’s not so heavy on the hands, but robust enough to facilitate a good hold. To guarantee prolonged use, it’s best to rinse the knife off with fresh water after use, it’s a really handy knife all in all. For more cool blades like this, check out our reviews of the best machetes.
Stainless steel construction
Razor sharp edged
- BrandSnake Eye Tactical
- Weight7.2 ounces
This full-sized knife is definitely the scuba divers go-to knife, it’s well-crafted with a beautiful curve that makes it quite easy to cut through materials. Measuring 9.45” long from the blade to the handle, it’s adequately sized for the task at hand. What’s great about this diving knife is the titanium blade and molded rubber handle that require little maintenance. Titanium diving knives would relatively give less stress in terms of maintenance thanks to the solid make. Also, you won’t need to season it with oil or the likes, except that’s what you prefer.
It’s durable, solid and extremely sharp; the sharp edge is great for tearing things apart, poking in holes and ripping materials like ropes in two. Just at the edge of the Promate Scuba Dive Knife’s durable handle, is a small and useful titanium handle that may come in handy in and out of the water. The knife comes with a sheath and adjustable straps for easy and secure wearing when swimming.
Impact-resistant rubber handles
Double secure lock on sheath
- Weight11.2 ounces
Made with 420C stainless steel, the Boffer Scuba Diving Knife is a rugged tactical knife that would viably cut entangling materials both in and out of the water. Crafted with a serrated blade, this knife would quickly cut through ropes, fishing lines and the sort in emergency and non-emergency situations alike. It’s pre-sharpened and can be used as it is, there’s no need to spend extra bucks on sharpening the blade again.
Furthermore, this is a great knife for practically all types of water activities with an incredibly sharp and pointed tip that would penetrate practically any surface. The rear of the blade is serrated while the other end is straight and equally sharp. However, this knife would require some maintenance after every swim, rinse, cloth-dry and oil it for enhanced longevity. You may also like some of the handy multitools from our list, so check them out.
1 knife and 2 sheaths included
Pre-sharpened and ready to use
- Weight5 ounces
The Cressi Borg Long Blade Knife is the modern-day scuba diver’s solution to emergency situations under the water. It’s incredibly and beautifully crafted with a double-sided edge; one edge is sharp and straight while the other is serrated. The top, serrated blade equally comes with a cut-line that’s great for cutting through fishing lines and the likes.
The Japanese stainless steel blade guarantees extreme sharpness and durability when it comes to long term use. For an easy and firm grip, the non-slip handle is ergonomically designed to support just that. It’s still easy to grip underwater thanks to the finger grips that make it simpler to hold onto. When swimming, the knife can safely be housed in the arm and leg straps that come with this exceptionally designed diving knife.
Japanese 304 steel blade
Techno-polymer thumb handle
Ergonomic, non-slip handle
- Weight1 pounds
For scuba divers who want to do a little more in the water, the Fury Tactical Extreme Dive Knife was designed for that. They say great things sometimes come in small packages, well that’s the story of this knife. It’s quite unique from what you’d see with other knives, sporting an extremely narrow and sharp blade.
The 440c stainless steel blade comes pre-sharpened and ready to cut, slice ad pierce through different materials and surfaces. The spear-point blade is equally serrated on one edge and straight on the other side. If you’re a spear diver, the Fury knife is one to always take along when swimming in the deep. It would equally be a reliable lifesaver if you happen to swim into a fishing net all the likes. Our guide to the best knife sharpeners features some amazing tools that will help you keep your knives sharp.
440C stainless steel blade
Quick-release kraton sheath
Easy-grip resin handle
Razor sharp tip
- BrandFury Tactical
- Weight3.52 ounces
What’s a scuba diving knife without a suitable sheath to strap it to your body? Almost worthless in the water! When swimming, you can’t wade around holding a knife in hand, especially if your dive into the deep is a relatively peaceful one. The XS Scuba Kp04 Neoprene Knife Holder is a tough, durable knife wrap that keeps the knife reliably in place when exploring the deep. It rocks a neoprene construction with a non-slip surface that keeps the knife securely in place.
There are also two Velcro strap buckles at both the top and rear edges for easing strapping across the legs or thighs. Just between the leg and the sheath, there’s a soft padding that keeps the tough and durable material from rubbing against the skin. Hold your diving knife conveniently with this neoprene knife holder.
Adjustable Velcro straps
Cushioned surface between leg and sheath
- BrandXS Scuba
- Weight4.8 ounces
For a credible option for spearfishing and diving with protective gear, the Cressi Skorpion Stainless Steel Blade Knife is here for it. Its spear edge makes it the perfect option for spearfishing and nabbing some fish on your dive through. This is not a regular diving knife, the design is modern, attractive with obvious attention to detail. With beautiful product markings just before the handle, this Italian-designed knife is not just functional, but equally finely-crafted to precision.
The bottom edge sports a sharp straight blade with a curved tip while the top edge is serrated. This two-edged blade will get you through emergency situations at sea, it’s extremely sharp and ready to tear, cut and rip into two. Alongside the knife, there’s an equally durable sheath that locks the knife in when swimming. For more quality gear for divers, check out our selection of the best dive watches.
Straight-edged and serrated blade
Included durable sheath
Designed in Italy
- Weight8 ounces
Made from 440C stainless steel material, the Punada Scuba Diving Knife is well crafted to precision for practically all diving activities. It rocks a really cool all-black design and is reinforced to withstand the elements in the water. It was crafted to provide exceptional protection in the water, whether it’s against a sea monster or slithering sea reed/rope. One edge is serrated to efficiently cut through the rope while the other edge is straight; both edges are exceptionally sharp.
For an incredibly budget price, the Punada offers a deal that’s almost irresistible. It’s easy to buy more than two in case anything ever happens to one in the deep. However, to ensure the knife doesn’t easily slip from the hands, the handles is reinforced with a woven rope through its form. This makes it easy to grip and hold without it easily slipping out of the hands.
Razor cutting edge
Two leg/arm straps
- Weight0.64 ounces
Somewhere in Japan, some genius scientists came up with a steel type that can actually withstand rust when constantly exposed to water. That’s what the Spyderco Pacific Salt Lightweight Folding Knife is made from. The steel is reinforced with nitrogen instead of carbon to make an extra-hardened cutting tool that is practically immune to rust and corrosion. This steel is precipitation-hardened, making viably more strong, durable and functional than most stainless steel knives.
Now this is a knife that needs little to no maintenance, it shines in the water, stays functional, and can simply be put away after use. The top edge is serrated while the other side of the blade is straight and slightly curved at the edge. With an equally reinforced fiber-glass handle, its whole form is extremely sturdy, solid and durable. Our guide to the best wood axes features more amazing cutting tools, so check them out.
Anti-rust H1 blade
High strength handles
- Weight0.16 ounces
If you’re looking for a lightweight and efficient knife to go spear-fishing with, this is the one. It’s not as heavy as other options and would fit like it’s not even there. It’s great for those shallow swims around the surface, probably not large enough to battle a sea monster, but quite reliable. Both edges of this two-sided scuba diving knife are pre-sharpened, making it easy to poke into ‘objects’ and equally cut lines and ropes.
One side is partially serrated while the other is straight and sharp, while the tip is razor-sharp for those hoping to catch a fish or two. This can be used as a primary or backup but is more advisable to be used as a back up because of its size. It comes with a tough sheath that locks securely with an audible click. Place this Spearfishing Diving Knife on the forearm or legs and you’re good to go.
Sharp stainless steel blade
- BrandMahiMahi Group
- Weight1.4 ounces
The Zip Diving Knife is another modern and classy diving knife, crafted to precision. It’s for scuba divers who love functionality but still value great style and exquisite design. The 8.3 full length is ergonomically designed to be an adequate companion through the unpredictable waters. The bottom edge of the blade is partially serrated to help cut through tough materials within indented edge for line-cutting, whilst the upper blade is straight and extremely sharp to cut you free quickly in any emergency situations; this means it can equally be used for spearfishing thanks to the extra sharp tip.
The handle is textured with an extra rubbery grip that won’t easily slip from the hands. In addition, there’s a secure sheath and straps for wearing the knife while swimming. This knife is sleek, well-crafted with stainless steel and reinforced handles, to avoid rusting, rinse and dry through after every dive.
Base hammer cap
Hard ABS sheath
Sleek and lightweight
- BrandZip Diving Knife
- Weight1.1 pounds
This little cutting tool will surprise you, it measures a total length of 7” yet would be a total lifesaver in emergency situations. Yes, it may be small, but it’s quite handy with a molded nylon grip for extra comfort. The non-slip base is equally reinforced for durability, with the ability to withstand the elements underwater without wear. The textured handle equally has a thumb rest for convenience and balance when cutting through materials. On the extra-sharp blade, there’s a serrated side for sitting through tough materials and a straight edge with an indent for line cutting.
However, unlike most of the knives on our list, the Scuba Choice Diving Knife comes with a blunt edge. The blunt edge makes it safer for beginners and those concerned about an extra-pointy razor-sharp edge. It equally makes it easier and safer to re-insert into the sheath. For the price, this is a pretty decent and functional stainless steel diving knife that gets the job done.
420 stainless steel blade
7” overall length
Molded nylon grip
- BrandScuba Choice
- Weight5 ounces