dive knife
Worth a lookShows a sweet-spot price point ($37.88 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$37.88avg listing price — sweet spot $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Price range
Great$7.95–$116.65cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great498.74avg incumbent reviews — the moat a new listing must climb
Growth
Good+54.4%90-day search growth — must beat 0% to launch
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Returns
Good2.5%return rate — above 5% kills the launch gate
Brand share
Good69%top-5 brand share — brands hold most of the demand
Market size
Good$417K$417K/yr · 365K searches
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
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
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.Peak months: Jun, Jul, Aug · busiest ÷ quietest = 2.0×
Top dive knife search terms
- dive knife167K/yr
- diving knife56K/yr
- scuba knife31K/yr
- spearfishing knife18K/yr
- dive knife with sheath and leg strap14K/yr
- titanium dive knife11K/yr
- scuba diving knife12K/yr
- diving knife saltwater11K/yr
- scuba dive knife9K/yr
- divers knife8K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$9.744.3★2,770 rev
DRAGON RIOT Scuba Diving Knife with Leg Straps & Sheath - Stainless Steel Blade Dive Knife Lightweight Sharp Divers Knife for Diving
DRAGON RIOT$26.194.2★252 rev
Dive Knife Scuba Diving Knife with Sheath and Leg Strap Thigh Knife Stainless Steel Fixed Blade Knife Hunting Knives Survival and Camping Gear
Diximus$15.484.0★260 rev
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$19.854.0★64 rev
Cressi Stainless Steel Diving Knife With Sheath for Leg Attachment- Vigo: Designed In Italy
CRESSI$21.504.0★1,158 rev
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$52.4611 rev
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$19.8564 rev
DRAGON RIOT Scuba Diving Knife with Leg Straps & Sheath - Stainless Steel Blade Dive Knife Lightweight Sharp Divers Knife for Diving
DRAGON RIOT$26.19252 rev
DRAGON RIOT Scuba Diving Knife with Leg Straps & Sheath - Stainless Steel Blade Dive Knife Lightweight Sharp Divers Knife for Diving
DRAGON RIOT$25.47252 rev
DRAGON RIOT Updated Dive Knife with Sheath & Leg Straps Saltwater Ultra Sharp Diving Knife with Knife Holster Double Edged Scuba Knife
DRAGON RIOT$28.26252 rev
Trending
90-day click momentum
Cressi Borg Diving Knives Black/Black Pointed Tip
CRESSI$47.934.5★
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$52.854.3★
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$52.464.0★
Cressi Underwater Spearfishing Knife with Tapering Blade -Tempered Stainless Steel Blade - Finisher: Designed in Italy
CRESSI$65.844.2★
Seac Samurai Knife - Red
SEAC$19.774.0★
What buyers say about dive knife
What buyers praise and complain about, mined from review topics.What buyers love
“Not bad for the money”
“seems well made”
“The blade was sharp”
“Good product, does not rust”
“very convenient”
“good quality and lasting so far”
“Came as advertised”
“Good grip”
“Balanced weight”
“Everything smell good”
What buyers complain about
“Rusty”
“knife is huge”
“buy quality instead of this cheaper product”
“The sheath broke on first dive”
“with the high price of the knife”
“Has a hard pull to get it out of case”
“why lie in product advertisement description”
“Whoever said this knife fell out of it's holder jist didn't read the instructions”
“minus a start for cheap rubber straps that broke before it even made out of the house”
“Currently gluing together”
Top return reasons
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.