---
title: "Shark Birthday Decorations — $449K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/shark-birthday-decorations"
last_updated: "2026-08-06T01:53:03.543Z"
locale: en
meta:
description: "Niche score 65/100 · $449K/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 65/100 · $449K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Shark Birthday Decorations — $449K/yr Amazon US Niche (2026) - Flapen"
---
# **shark birthday decorations**
**Worth a look**
Shows no brand lock-in (top 5 brands take 42% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 58Growth 91Conversion 59Competition 79Returns 37Price range 55Avg price 70Brand share 93Review moat 66Quality gap 22
**Brand share**
**Great****42%**
top-5 brand share — no brand owns this niche
**Growth**
**Great****+100.5%**
90-day search growth — must beat 0% to launch
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Avg price**
**Good****$14.40**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****844.49**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Good****5.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$449K**
$449K/yr · 618K searches
**Price range**
**Good****$2.85–$29.76**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Okay****4.1%**
return rate — above 5% kills the launch gate
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, shark birthday decorations is a $449K/yr Amazon United States market (618K searches/yr). The top 5 brands hold 42% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 65/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **shark birthday decorations market data**
- **Units sold / yr**
- **25K–30K**
- avg 500–750/product
- **Revenue / yr**
- **$360K–$432K**
- units × avg price
- **Conversion rate**
- **5.0%**
- **Avg BSR**
- **#1,777**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **5.5%**
- **Avg brand age**
- **28 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**43 **▼falling
**Sellers**
**56**
**Top-5 brand share**
**42%**
Top 20: 77%
**Top-5 click share**
**36%**
Top 20: 71%
**Open market**
**54%**
- LINHAXM13% - Generic10% - Glad8% - WERNNSAI6% - CMUSKO5% - Bafeil3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +100.5% search growth over the last 90 days.
40K30KSpike '25Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul, Aug · busiest ÷ quietest = 7.3×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/shark-birthday-decorations/trend)
## **Top shark birthday decorations search terms**
- **shark birthday party decorations**141K/yr+38.2%2.4% conv. - **shark party decorations**89K/yr+107.8%2.3% conv. - **shark party**49K/yr+133.0%1.4% conv. - **shark decorations**52K/yr+136.5%2.1% conv. - **shark week decorations**25K/yr>1,000%1.9% conv. - **shark birthday decorations**43K/yr+61.5%2.5% conv. - **shark birthday**38K/yr+45.2%1.7% conv. - **shark themed party decorations**39K/yr+79.8%1.9% conv. - **shark decorations for party**25K/yr+108.7%2.8% conv. - **shark party supplies**20K/yr+142.0%1.5% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/shark-birthday-decorations/search-terms)
## **Top shark birthday decorations 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%4%$18K8%$36K12%$54K16%$72K1101001K10K 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**LINHAXM 157 PCS Shark Birthday Party Decorations Includes Plates Napkins Cups Cutlery Cake Toppers Banner Hanging Swirls Tablecloth Balloon for Under The Sea Party Decorations**LINHAXM**$21.22**4.7★434 rev](https://www.amazon.com/dp/B0DRC4SSLX) [2**Glad for Kids 8.5 Inch Round Paper Plates Cute Sharks Design Heavy Duty Cut-Resistant and Soak-Proof Disposable Plates Microwavable Kids Tableware for Meals Parties Snacks 20 Count**Glad**$2.85**4.8★595 rev](https://www.amazon.com/dp/B0883SNHJ1) [3**Shark Birthday Party Supplies Shark Theme Style Party Include Happy Birthday Banner Backdrop Tableware Set Tablecloth Hanging Swirls Cake Toppers Cupcake Toppers Latex Balloons(A)**Generic**$21.41**4.8★150 rev](https://www.amazon.com/dp/B0DGTBKTWK) [4**Shark Birthday Party Decorations 190Pcs Shark Party Supplies Tableware Set with Plates Napkins Cups Tablecloth Banner Hanging Swirls Balloons Cake Topper Cupcake Toppers for Under The Sea Party Decor**CMUSKO**$20.70**4.9★38 rev](https://www.amazon.com/dp/B0FL1L835S) [5**Bafeil Shark Party Door Banner Decorations with Blue Foil Fringe Curtains**Bafeil**$15.88**4.4★28 rev](https://www.amazon.com/dp/B0FLDF94WB)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Srua Don Shark Birthday Party Decorations Ocean Theme Shark Party Supplies for Birthday Baby Shower Paper Plate Cup Napkin Backdrop Topper Tablecloth Balloon Swirl Cutlery Banner Serves 24**Srua Don**$23.38**14 rev5mo ago](https://www.amazon.com/dp/B0GJZFBSKN) [**Shark Birthday Candles Shark Party Decoration Supplies Birthday Number Candles for Cake Topper (Blue Number 4)**Candoll**$5.97**9 rev6mo ago](https://www.amazon.com/dp/B0GHZN7D25) [**287pcs Shark Birthday Party Decorations Complete Party Set Serves 25 Guests Shark Birthday Decorations includes Banner Balloon Arch Backdrop Plates Tablecloth for Shark-theme Party**Fexivo**$29.51**58 rev8mo ago](https://www.amazon.com/dp/B0G23F92GG) [**SUNBEAUTY Shark Birthday Party Decorations Shark Birthday Banner Ocean Theme Party Decoration Under The Sea Shark Garland Blue Ocean Swirls Hanging Wall Decor for Boys Baby Shower Beach Summer Party**SUNBEAUTY**$15.66**560 rev8mo ago](https://www.amazon.com/dp/B0FZGQ59WD) [**Bafeil Shark Party Door Banner Decorations with Blue Foil Fringe Curtains**Bafeil**$15.88**28 rev11mo ago](https://www.amazon.com/dp/B0FLDF94WB)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Shark Birthday Candles Shark Party Decoration Supplies Birthday Number Candles for Cake Topper (Blue Number 4)**Candoll**$5.97**4.8★**▲ 197%**](https://www.amazon.com/dp/B0GHZN7D25) [**SUNBEAUTY Shark Birthday Party Decorations Shark Birthday Banner Ocean Theme Party Decoration Under The Sea Shark Garland Blue Ocean Swirls Hanging Wall Decor for Boys Baby Shower Beach Summer Party**SUNBEAUTY**$15.66**4.6★**▲ 169%**](https://www.amazon.com/dp/B0FZGQ59WD) [**Srua Don Shark Birthday Party Decorations Ocean Theme Shark Party Supplies for Birthday Baby Shower Paper Plate Cup Napkin Backdrop Topper Tablecloth Balloon Swirl Cutlery Banner Serves 24**Srua Don**$23.38**4.8★**▲ 162%**](https://www.amazon.com/dp/B0GJZFBSKN) [**287pcs Shark Birthday Party Decorations Complete Party Set Serves 25 Guests Shark Birthday Decorations includes Banner Balloon Arch Backdrop Plates Tablecloth for Shark-theme Party**Fexivo**$29.51**4.5★**▲ 79%**](https://www.amazon.com/dp/B0G23F92GG) [**3 Pcs Iridescent Waves Tablecloths - Disposable Plastic Ocean Blue Table Cloth Rectangle Table Covers for Under the Sea Beach Surf Pool Party Birthday Party Decorations 54 x 108 Inch**Hallswl**$8.89**4.6★**▲ 53%**](https://www.amazon.com/dp/B0CV33D9F1)
**~~View all trending →~~**
## **What buyers say about shark birthday decorations**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Product is great as expected no issues”*
**Color**10%
*“The colors are pretty”*
**Value For Money**9%
*“Price was reasonable”*
**Advertised Vs Actual Product**7%
*“Exactly as pictured”*
**Size-Overall**5%
*“Good size”*
**Design-Overall**5%
*“The designs are fun and cohesive, and its honestly one of the most complete birthday decoration kits Ive come across”*
**Durability**5%
*“Very durable”*
**Assembly/Installation**4%
*“Easy to assemble”*
**Gifting Purpose**4%
*“Such a fun gift”*
**Taste-Overall**4%
*“These gummies are very tasty”*
### **What buyers complain about **
**Durability**17%
*“But falls apart easily”*
**Quality-Overall**14%
*“not well made”*
**Size-Overall**12%
*“Poor fit”*
**Strength**8%
*“it was very flimsy”*
**Adhesion/Stickiness**7%
*“Not sticky enough”*
**Smell**6%
*“had a strong plastic smell”*
**Thickness**5%
*“Was alittle thick”*
**Assembly/Installation**4%
*“Poor assembly - parts didnt fit”*
**Stitch/Finish/Polish**2%
*“Seams are trash”*
**Material Quality**2%
*“The material was very cheap”*
### **Top return reasons **
**Size-Overall**36%
**Color**11%
**Length**9%
**Value For Money**7%
**Advertised Vs Actual Product**5%
**Quality-Overall**4%
**Gap/Hole**3%
**Material Quality**3%
**Defective Material/Parts**3%
**Adhesion/Stickiness**2%
## **Common questions**
- **Is shark birthday decorations profitable to sell on Amazon United States?**
- The niche generates $449K/yr across 49 tracked products. 4 of 12 products launched in the last 360 days are still selling. 90-day search growth is +100.5%. Flapen's verdict: Worth a look (65/100).
- **How competitive is the shark birthday decorations niche?**
- 43 brands and 56 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 42% of demand.
- **What do buyers complain about in shark birthday decorations?**
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 4.1%.
- **When does demand for shark birthday decorations peak?**
- Demand peaks in Jun–Jul–Aug; the busiest month runs 7.3× the quietest.
- **What does it cost to enter the shark birthday decorations niche?**
- Listings span $2.85–$29.76; the average listing price is $14.40 (sweet spot $15–$100). The average incumbent carries 844 reviews — the moat a new listing must climb.
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