---
title: "Dive Knife — $417K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/dive-knife"
last_updated: "2026-08-07T16:47:24.035Z"
locale: en
meta:
description: "Niche score 66/100 · $417K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 66/100 · $417K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Dive Knife — $417K/yr Amazon US Niche (2026) - Flapen"
---
# **dive knife**
**Worth a look**
Shows a sweet-spot price point ($37.88 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 56Growth 71Conversion 38Competition 68Returns 63Price range 78Avg price 95Brand share 59Review moat 75Quality gap 80
**Avg price**
**Incredible****$37.88**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$7.95–$116.65**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****498.74**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+54.4%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****44%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****69%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****$417K**
$417K/yr · 365K searches
**Conversion**
**Okay****3.0%**
search→purchase rate — share of searches ending in a sale
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, dive knife is a $417K/yr Amazon United States market (365K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 66/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dive knife market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **$303K–$379K**
- units × avg price
- **Conversion rate**
- **3.0%**
- **Avg BSR**
- **#43**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **74%**
- **Out of stock**
- **2.8%**
- **Avg brand age**
- **69 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▼falling
**Sellers**
**52**
**Top-5 brand share**
**69%**
Top 20: 100%
**Top-5 click share**
**44%**
Top 20: 83%
**Open market**
**25%**
- CRESSI19% - punada16% - Diximus14% - DRAGON RIOT13% - Saekodive6% - TI GEEK5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +54.4% search growth over the last 90 days.
13K8KHoliday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul, Aug · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/dive-knife/trend)
## **Top dive knife search terms**
- **dive knife**167K/yr+62.3%2.1% conv. - **diving knife**56K/yr+40.3%1.6% conv. - **scuba knife**31K/yr+42.8%1.7% conv. - **spearfishing knife**18K/yr+51.9%1.6% conv. - **dive knife with sheath and leg strap**14K/yr+67.4%3.2% conv. - **titanium dive knife**11K/yr+64.8%0.6% conv. - **scuba diving knife**12K/yr+38.3%1.7% conv. - **diving knife saltwater**11K/yr+67.1%2.3% conv. - **scuba dive knife**9K/yr+31.4%2.3% conv. - **divers knife**8K/yr+29.5%1.5% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/dive-knife/search-terms)
## **Top dive knife products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$21K10%$42K15%$63K20%$83K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**punada Dive Knife - Scuba Diving Knife with holster 2 Types Sheath 2 Pairs Thigh Leg Straps Black Premium Divers Knives Shears for Outdoor Spearfishing Snorkeling**punada**$9.74**4.3★2,770 rev](https://www.amazon.com/dp/B0748K9N62) [2**DRAGON RIOT Scuba Diving Knife with Leg Straps & Sheath - Stainless Steel Blade Dive Knife Lightweight Sharp Divers Knife for Diving**DRAGON RIOT**$26.19**4.2★252 rev](https://www.amazon.com/dp/B0DDPKK6N1) [3**Dive Knife Scuba Diving Knife with Sheath and Leg Strap Thigh Knife Stainless Steel Fixed Blade Knife Hunting Knives Survival and Camping Gear**Diximus**$15.48**4.0★260 rev](https://www.amazon.com/dp/B0CDSXFZ8D) [4**Dive Knife 8.3 Scuba Knife with Sheath and Leg Strap Fixed Blade Diving Knife Made of Exceptional Stainless Steel with Non-Stick Coating Scuba Diving Gear for Spearfishing and Survival - Black**Diximus**$19.85**4.0★64 rev](https://www.amazon.com/dp/B0F1HR6BQL) [5**Cressi Stainless Steel Diving Knife With Sheath for Leg Attachment- Vigo: Designed In Italy**CRESSI**$21.50**4.0★1,158 rev](https://www.amazon.com/dp/B00BD27J5S)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TI GEEK Titanium Survival Scuba Diving Knife Fixed Blade Dive Knife with Sheath & Straps - Holster on Divers BCD Thigh/Leg GC Belt Buckle or Wrist Cutting Serrated Edge & Line Cutter**TI GEEK**$52.46**11 rev1y ago](https://www.amazon.com/dp/B0F1N3YZWJ) [**Dive Knife 8.3 Scuba Knife with Sheath and Leg Strap Fixed Blade Diving Knife Made of Exceptional Stainless Steel with Non-Stick Coating Scuba Diving Gear for Spearfishing and Survival - Black**Diximus**$19.85**64 rev1y ago](https://www.amazon.com/dp/B0F1HR6BQL) [**DRAGON RIOT Scuba Diving Knife with Leg Straps & Sheath - Stainless Steel Blade Dive Knife Lightweight Sharp Divers Knife for Diving**DRAGON RIOT**$26.19**252 rev1y ago](https://www.amazon.com/dp/B0DDPKK6N1) [**DRAGON RIOT Scuba Diving Knife with Leg Straps & Sheath - Stainless Steel Blade Dive Knife Lightweight Sharp Divers Knife for Diving**DRAGON RIOT**$25.47**252 rev1y ago](https://www.amazon.com/dp/B0DDPNCFR2) [**DRAGON RIOT Updated Dive Knife with Sheath & Leg Straps Saltwater Ultra Sharp Diving Knife with Knife Holster Double Edged Scuba Knife**DRAGON RIOT**$28.26**252 rev2y ago](https://www.amazon.com/dp/B0D9RZH38Q)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Cressi Borg Diving Knives Black/Black Pointed Tip**CRESSI**$47.93**4.5★**▲ 127%**](https://www.amazon.com/dp/B07D8FPFCD) [**TI GEEK Titanium Survival Scuba Diving Fixed Blade Knife w Sheath & Straps - Holster on Divers BCD Thigh/Leg GC Belt Buckle or Wrist Cutting Serrated Edge & Line Cutter**TI GEEK**$52.85**4.3★**▲ 112%**](https://www.amazon.com/dp/B0CSZB3VRD) [**TI GEEK Titanium Survival Scuba Diving Knife Fixed Blade Dive Knife with Sheath & Straps - Holster on Divers BCD Thigh/Leg GC Belt Buckle or Wrist Cutting Serrated Edge & Line Cutter**TI GEEK**$52.46**4.0★**▲ 78%**](https://www.amazon.com/dp/B0F1N3YZWJ) [**Cressi Underwater Spearfishing Knife with Tapering Blade -Tempered Stainless Steel Blade - Finisher: Designed in Italy**CRESSI**$65.84**4.2★**▲ 66%**](https://www.amazon.com/dp/B01MSHHHR3) [**Seac Samurai Knife - Red**SEAC**$19.77**4.0★**▲ 60%**](https://www.amazon.com/dp/B01N326FKH)
**~~View all trending →~~**
## **What buyers say about dive knife**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**19%
*“Not bad for the money”*
**Quality-Overall**15%
*“seems well made”*
**Sharpness**12%
*“The blade was sharp”*
**Rusts/Corrodes**10%
*“Good product, does not rust”*
**Ease Of Use**8%
*“very convenient”*
**Durability**4%
*“good quality and lasting so far”*
**Advertised Vs Actual Product**4%
*“Came as advertised”*
**Grip**3%
*“Good grip”*
**Weight Light**3%
*“Balanced weight”*
**Smell**3%
*“Everything smell good”*
### **What buyers complain about **
**Rusts/Corrodes**33%
*“Rusty”*
**Size-Overall**14%
*“knife is huge”*
**Quality-Overall**12%
*“buy quality instead of this cheaper product”*
**Durability**8%
*“The sheath broke on first dive”*
**Value For Money**4%
*“with the high price of the knife”*
**Ease Of Use**3%
*“Has a hard pull to get it out of case”*
**Advertised Vs Actual Product**3%
*“why lie in product advertisement description”*
**Instructions/User Manual/Troubleshooting**3%
*“Whoever said this knife fell out of it's holder jist didn't read the instructions”*
**Strap/String Quality**3%
*“minus a start for cheap rubber straps that broke before it even made out of the house”*
**Adhesion/Stickiness**3%
*“Currently gluing together”*
### **Top return reasons **
**Size-Overall**38%
**Quality-Overall**10%
**Functionality-Overall**6%
**Advertised Vs Actual Product**5%
**Value For Money**5%
**Defective Material/Parts**4%
**Compatibility-Overall**3%
**Rusts/Corrodes**3%
**Strength**3%
**Grip**2%
## **Common questions**
- **Is dive knife profitable to sell on Amazon United States?**
- The niche generates $417K/yr across 34 tracked products. 90-day search growth is +54.4%. Flapen's verdict: Worth a look (66/100).
- **How competitive is the dive knife niche?**
- 16 brands and 52 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 69% of demand.
- **What do buyers complain about in dive knife?**
- Top complaints mined from reviews: Rusts/Corrodes, Size-Overall, Quality-Overall. The return rate is 2.5%.
- **When does demand for dive knife peak?**
- Demand peaks in Jun–Jul–Aug; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the dive knife niche?**
- Listings span $7.95–$116.65; the average listing price is $37.88 (sweet spot $15–$100). The average incumbent carries 499 reviews — the moat a new listing must climb.
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