---
title: "Shark Fin — $75K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/shark-fin"
last_updated: "2026-08-10T17:43:50.632Z"
locale: en
meta:
description: "Niche score 58/100 · $75K/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 58/100 · $75K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Shark Fin — $75K/yr Amazon US Niche (2026) - Flapen"
---
# **shark fin**
**Worth a look**
Shows a sweet-spot price point ($24.04 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 19Growth 90Conversion 35Competition 63Returns 18Price range 86Avg price 95Brand share 73Review moat 69Quality gap 73
**Avg price**
**Incredible****$24.04**
avg listing price — sweet spot $15–$100
**Growth**
**Great****+97.0%**
90-day search growth — must beat 0% to launch
**Price range**
**Great****$7.86–$74.78**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****61%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****755.32**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$75K**
$75K/yr · 111K searches
**Returns**
**Bad****6.9%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, shark fin is a $75K/yr Amazon United States market (111K searches/yr). The top 5 brands hold 61% of demand. Demand peaks in Jul–Oct. Verdict: Worth a look — 58/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **shark fin market data**
- **Units sold / yr**
- **4K–5K**
- avg 100–250/product
- **Revenue / yr**
- **$96K–$120K**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#1,286**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **85%**
- **Out of stock**
- **4.3%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **▲rising
**Sellers**
**33**
**Top-5 brand share**
**61%**
Top 20: 97%
**Top-5 click share**
**47%**
Top 20: 84%
**Open market**
**35%**
- Fin Fun22% - Foyinbet15% - Civaner9% - Fun Express9% - Holyzuel6% - Prsca4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +97.0% search growth over the last 90 days.
13K8KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul, Oct · busiest ÷ quietest = 12.2×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/shark-fin/trend)
## **Top shark fin search terms**
- **shark fin**63K/yr+67.7%2.5% conv. - **shark fin for pool**10K/yr+507.5%2.6% conv. - **shark fins**10K/yr+68.2%2.7% conv. - **shark fin for swimming**9K/yr+87.1%2.1% conv. - **shark fin costume**12K/yr-8.3%4.5% conv. - **shark costume accessories**6K/yr+10.9%0.6% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/shark-fin/search-terms)
## **Top shark fin 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%$4K10%$7K15%$11K20%$15K1101001K10K 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**Fin Fun Shark Fin with Included Travel Bag - Adjustable Shark Costume for Swimming - Lightweight Snorkel or Pool Toy for Kids & Adults - (Gray)**Fin Fun**$28.76**4.7★585 rev](https://www.amazon.com/dp/B096WHGCFG) [2**Civaner Shark Costume Fin Gray Shark Costume Props Easy to Wear Accessories for Adults Dog Cosplay(Classic)**Civaner**$9.21**4.4★336 rev](https://www.amazon.com/dp/B09JKKTP3L) [3**Fun Express Shark Fin Accessory - Shark Costume for Kids & Adults with Adjustable Elastic Straps | Shark Tail Back Fin for Halloween Costume Parties & Beach Events | Easy Shark Outfit Accessories**Fun Express**$11.16**3.9★603 rev](https://www.amazon.com/dp/B00B1TJ31G) [4**Holyzuel Shark Adventure Costume Fin Gray Shark Accessory Costume Easy to Wear Play Costume Props for Adults Festivals Parties Events Cosplay Dive into a Sea of Fun**Holyzuel**$9.40**3.8★42 rev](https://www.amazon.com/dp/B0CZTD6KWW) [5**Prsca Kids Short Swim Fins Lap Training Flippers for Pool Youth Beginners**Prsca**$22.00**4.8★392 rev](https://www.amazon.com/dp/B0B6ZCCH25)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SHARKMAN Super Swimmer Shark Swim Gear for Kids Great White Mask with Built-in Goggles Dorsal Fin Flippers & Web Gloves NEW Improved Straps & Buckles Fun Costume Pool Toy Ages 4-12**Big Time Toys**$23.57**5 rev4mo ago](https://www.amazon.com/dp/B0GSCMPVH3) [**Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Small Barracuda Black**Fin Fun**$74.78**16 rev5mo ago](https://www.amazon.com/dp/B0GLDQWB2D) [**MELUMILU Snorkel Fins Swim Fins Travel Size Short Adjustable for Snorkeling Diving Adult Men Women Open Heel Swimming Flippers (Black)**MELUMILU**$23.30**137 rev1y ago](https://www.amazon.com/dp/B0F2MLDVD2) [**ZHOSXRC Resin Floating Shark Head Garden Statue Realistic Scary Floating Shark Fin Pond Decor Floating Pond Ornament Realistic Yard Animal Art Lawn Ornament for Pool Pond (Fin)**ZHOSXRC**$19.86**4 rev2y ago](https://www.amazon.com/dp/B0D7PQCR9T) [**Holyzuel Shark Adventure Costume Fin Gray Shark Accessory Costume Easy to Wear Play Costume Props for Adults Festivals Parties Events Cosplay Dive into a Sea of Fun**Holyzuel**$9.40**42 rev2y ago](https://www.amazon.com/dp/B0CZTD6KWW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MELUMILU Snorkel Fins Swim Fins Travel Size Short Adjustable for Snorkeling Diving Adult Men Women Open Heel Swimming Flippers (Black)**MELUMILU**$23.30**4.4★**▲ 238%**](https://www.amazon.com/dp/B0F2MLDVD2) [**Foyinbet Kids Swim Fins Short Kids Fins Youth Swimming Flippers for Lap Swimming Training for Children Girls Boys Beginners 2XS**Foyinbet**$28.00**4.6★**▲ 237%**](https://www.amazon.com/dp/B09TW6WKBK) [**Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Small Barracuda Black**Fin Fun**$74.78**4.5★**▲ 234%**](https://www.amazon.com/dp/B0GLDQWB2D) [**Prsca Kids Short Swim Fins Lap Training Flippers for Pool Youth Beginners**Prsca**$22.00**4.8★**▲ 234%**](https://www.amazon.com/dp/B0B6ZCCH25) [**SHARKMAN Super Swimmer Shark Swim Gear for Kids Great White Mask with Built-in Goggles Dorsal Fin Flippers & Web Gloves NEW Improved Straps & Buckles Fun Costume Pool Toy Ages 4-12**Big Time Toys**$23.57**3.2★**▲ 233%**](https://www.amazon.com/dp/B0GSCMPVH3)
**~~View all trending →~~**
## **What buyers say about shark fin**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**26%
*“They run true to size”*
**Quality-Overall**17%
*“Good quality”*
**Durability**5%
*“Durable”*
**Design-Overall**5%
*“Good build”*
**Strength**4%
*“Stands up nicely in a table”*
**Value For Money**4%
*“Great price for fun in the water”*
**Material Quality**4%
*“Great material”*
**Water Resistance**4%
*“The fins worked fine for swimming around on my float tube”*
**Fun/Entertainment Experience**4%
*“The design is fun and looks fantastic for parties, Halloween, or just playful dress-up”*
**Comfort-Overall**4%
*“comfortable”*
### **What buyers complain about **
**Size-Overall**38%
*“Didnt fit my car even though it said it would fit my car”*
**Compatibility-Overall**17%
*“Does not fit Lexus NX series”*
**Durability**7%
*“Breaks easily”*
**Strap/String Quality**7%
*“Flippers: a clip that holds the strap broke first time using them”*
**Advertised Vs Actual Product**6%
*“Does not fit as advertised”*
**Quality-Overall**4%
*“Trash”*
**Adhesion/Stickiness**2%
*“Better adhesive”*
**Suitable For Outdoor**1%
*“So if this is a for an outdoor party, be warned”*
**Maintenance And Repair**1%
*“This does not replace it at all”*
**Weight Heavy**1%
*“The product was bulky”*
### **Top return reasons **
**Size-Overall**68%
**Compatibility-Overall**17%
**Advertised Vs Actual Product**3%
**Defective Material/Parts**2%
**Functionality-Overall**1%
**Value For Money**1%
**Adhesion/Stickiness**1%
**Color**1%
**Strap/String Quality**1%
**Quality-Overall**1%
## **Common questions**
- **Is shark fin profitable to sell on Amazon United States?**
- The niche generates $75K/yr across 34 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +97.0%. Flapen's verdict: Worth a look (58/100).
- **How competitive is the shark fin niche?**
- 23 brands and 33 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 61% of demand.
- **What do buyers complain about in shark fin?**
- Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Durability. The return rate is 6.9% — above our launch gate.
- **When does demand for shark fin peak?**
- Demand peaks in Jul–Oct; the busiest month runs 12.2× the quietest.
- **What does it cost to enter the shark fin niche?**
- Listings span $7.86–$74.78; the average listing price is $24.04 (sweet spot $15–$100). The average incumbent carries 755 reviews — the moat a new listing must climb.
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