---
title: "Ocean Diorama Supplies — $11K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/arts-crafts-sewing/ocean-diorama-supplies"
last_updated: "2026-08-10T14:21:51.703Z"
locale: en
meta:
description: "Niche score 47/100 · $11K/yr market · 43K searches/yr · $16.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $11K/yr market · 43K searches/yr · $16.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ocean Diorama Supplies — $11K/yr Amazon US Niche (2026) - Flapen"
---
# **ocean diorama supplies**
**Skip it**
A small market ($11K/yr) — this niche doesn't clear our bar today.
Market size 3Growth 13Conversion 18Competition 81Returns 71Price range 73Avg price 79Brand share 84Review moat 80Quality gap 35
**Brand share**
**Great****51%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****34%**
top-5 click share — an open shelf
**Review moat**
**Great****394.93**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$16.73**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$5.31–$41.13**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Good****2.2%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Bad****1.5%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-24.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$11K**
$11K/yr · 43K searches
**Signals**[** 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, ocean diorama supplies is a $11K/yr Amazon United States market (43K searches/yr). The top 5 brands hold 51% of demand. Demand peaks in Feb–Mar–Apr–May. Verdict: Skip it — 47/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ocean diorama supplies market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$42K–$50K**
- units × avg price
- **Conversion rate**
- **1.5%**
- **Avg BSR**
- **#312**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **90%**
- **Out of stock**
- **5.3%**
- **Avg brand age**
- **33 months**
- **Avg seller age**
- **191 days**
## **Competition & brand share**
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.
**Brands**
**28 **▼falling
**Sellers**
**43**
**Top-5 brand share**
**51%**
Top 20: 94%
**Top-5 click share**
**34%**
Top 20: 78%
**Open market**
**45%**
- AmazingSpark21% - Teyva Daily9% - Funcorn Toys8% - Ameliade7% - Simgoing6% - QUOZUO5%
## **Demand & seasonality**
Weekly Amazon search volume, last 62 weeks — -24.8% search growth over the last 90 days.
2K2KSpike '25Black Friday '25Spike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Feb, Mar, Apr, May · busiest ÷ quietest = 21.3×
[**Open Trend **](https://flapen.com/research/us/arts-crafts-sewing/ocean-diorama-supplies/trend)
## **Top ocean diorama supplies search terms**
- **ocean diorama supplies**14K/yr+13.6%5.8% conv. - **ocean diorama**10K/yr-21.8%4.2% conv. - **ocean habitat project supplies**10K/yr-40.3%6.4% conv. - **ocean diorama kit**9K/yr-51.7%4.0% conv. [**All search terms **](https://flapen.com/research/us/arts-crafts-sewing/ocean-diorama-supplies/search-terms)
## **Top ocean diorama supplies 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%2%$2114%$4216%$6328%$8431101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Funcorn Toys Ocean Sea Animal 52 Pack Assorted Mini Vinyl Plastic Animal Toy Set Realistic Under The Sea Life Figure Bath Toy for Child Educational Party Cake Cupcake Topper Valentines Day Gift**Funcorn Toys**$9.82**4.6★7,729 rev](https://www.amazon.com/dp/B071YQQFXN) [2**Teyva Daily 60 Pcs Ocean Diorama Kit Habitat Project Box Set 3D Ocean Diorama Supplies Include Under The Sea Animals Figures Artificial Coral Seagrass with Cardboard for DIY Crafts Gifts**Teyva Daily**$41.13**4.8★7 rev](https://www.amazon.com/dp/B0GKL4M735) [3**Simgoing Ocean Diorama Kit Habitat Project Supplies Under The Sea Animals Figures Small Shark Fish Figures Artificial Coral Seagrass with Gift Box for Gifts Birthday Party Decorations**Simgoing**$39.82**4.5★102 rev](https://www.amazon.com/dp/B0F8463FGT) [4**AmazingSpark 2 Set Ocean Diorama Box and Water Sticker Decor Ocean Diorama Project Supplies Set Cardboard Display Case Kit & Water Sticker with Double Sided Tapes for DIY Crafts Toys Dollhouse**AmazingSpark**$18.06**4.6★119 rev](https://www.amazon.com/dp/B0FH78VJDD) [5**AmazingSpark 46 Pcs Ocean Diorama Kit Habitat Project Supplies Under The Sea Animals Figures Shark Fish Figures Artificial Coral Sea Grass with Diorama Box for Gifts Birthday Party Decorations(Ocean)**AmazingSpark**$38.74**4.6★23 rev](https://www.amazon.com/dp/B0G6JT54B6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Thenshop 62 Pcs Ocean Diorama Kit Under The Sea Animal Figure Habitat Project Supplies Include Cardboard Diorama Ocean Fish Figure Artificial Seaweed and Coral for Birthday Gifts Party Favors**Thenshop**$26.07**1 rev3mo ago](https://www.amazon.com/dp/B0GL2DT53P) [**AmazingSpark 43 Pcs Ocean Diorama Kit Habitat Project Supplies Under the Sea Animals Figures Shark Fish Figures Artificial Coral Sea Grass with Diorama Box for Gifts Birthday Party(Box Not Included)**AmazingSpark**$30.71**1 rev4mo ago](https://www.amazon.com/dp/B0GSZWH8FC) [**Duraaamo 39 Pcs Ocean Diorama Kit Habitat Project Supplies Under The Sea Animal Figures Small Shark Fish Plastic Ocean Creatures with Coral for Miniature Landscape Birthday Vbs Party DIY Craft Project**Duraaamo**$19.75**3 rev4mo ago](https://www.amazon.com/dp/B0GSZV2NCP) [**AmazingSpark 38 Pcs Ocean Diorama Kit Habitat Project Supplies Under the Sea Animals Figures Shark Fish Figures Artificial Coral Sea Grass with Diorama Box for Gifts Birthday Party Decorations**AmazingSpark**$30.85**0 rev4mo ago](https://www.amazon.com/dp/B0GSW439SJ) [**Teyva Daily 60 Pcs Ocean Diorama Kit Habitat Project Box Set 3D Ocean Diorama Supplies Include Under The Sea Animals Figures Artificial Coral Seagrass with Cardboard for DIY Crafts Gifts**Teyva Daily**$41.13**7 rev5mo ago](https://www.amazon.com/dp/B0GKL4M735)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Duraaamo 39 Pcs Ocean Diorama Kit Habitat Project Supplies Under The Sea Animal Figures Small Shark Fish Plastic Ocean Creatures with Coral for Miniature Landscape Birthday Vbs Party DIY Craft Project**Duraaamo**$19.75**4.3★**▲ 219%**](https://www.amazon.com/dp/B0GSZV2NCP) [**AmazingSpark 38 Pcs Ocean Diorama Kit Habitat Project Supplies Under the Sea Animals Figures Shark Fish Figures Artificial Coral Sea Grass with Diorama Box for Gifts Birthday Party Decorations**AmazingSpark**$30.85**0.0★**▲ 217%**](https://www.amazon.com/dp/B0GSW439SJ) [**AmazingSpark 43 Pcs Ocean Diorama Kit Habitat Project Supplies Under the Sea Animals Figures Shark Fish Figures Artificial Coral Sea Grass with Diorama Box for Gifts Birthday Party(Box Not Included)**AmazingSpark**$30.71**5.0★**▲ 217%**](https://www.amazon.com/dp/B0GSZWH8FC) [**Thenshop 62 Pcs Ocean Diorama Kit Under The Sea Animal Figure Habitat Project Supplies Include Cardboard Diorama Ocean Fish Figure Artificial Seaweed and Coral for Birthday Gifts Party Favors**Thenshop**$26.07**5.0★**▲ 205%**](https://www.amazon.com/dp/B0GL2DT53P) [**Bruislard Ripple Water Sticker 5PCS Fake Water Self Adhesive Realistic Stream Pattern Artificial-Water Effect Sheet Ocean Diorama Supplies for Miniature Lakes Beach Pools Rivers and Diorama Scenery**Bruislard**$7.40**4.4★**▲ 140%**](https://www.amazon.com/dp/B0GJT6VTVQ)
**~~View all trending →~~**
## **What buyers say about ocean diorama supplies**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“Good quality”*
**Color**12%
*“Bright colors”*
**Value For Money**10%
*“Very good for the price”*
**Fun/Entertainment Experience**9%
*“Fun hide and seek”*
**Design-Overall**6%
*“Worked great for the design”*
**Advertised Vs Actual Product**6%
*“Exactly as pictured and described”*
**Size-Overall**6%
*“Great size”*
**Assembly/Installation**4%
*“Easy to assemble”*
**Material Quality**4%
*“The material feels durable”*
**Adhesion/Stickiness**3%
*“They have good stickiness”*
### **What buyers complain about **
**Size-Overall**19%
*“is smaller than the interior floor dimension”*
**Durability**11%
*“It broke sent it to my great granddaughter”*
**Quality-Overall**9%
*“Cheap aquarium plants”*
**Value For Money**8%
*“a bit expensive”*
**Material Quality**6%
*“The product description doesn't specify the material”*
**Design-Overall**5%
*“Not good for my project”*
**Advertised Vs Actual Product**5%
*“Not at all what was pictured”*
**Color**4%
*“These were decent decent quality the sizes were variable the colors weren't the greatest”*
**Smell**3%
*“The smell is awful”*
**Instructions/User Manual/Troubleshooting**3%
*“BUT NO INSTRUCTIONS”*
### **Top return reasons **
**Size-Overall**55%
**Advertised Vs Actual Product**9%
**Value For Money**7%
**Quality-Overall**6%
**Material Quality**3%
**Color**3%
**Defective Material/Parts**3%
**Functionality-Overall**2%
**Sharpness**2%
**Adhesion/Stickiness**1%
## **Common questions**
- **Is ocean diorama supplies profitable to sell on Amazon United States?**
- The niche generates $11K/yr across 42 tracked products. 0 of 20 products launched in the last 360 days are still selling. 90-day search growth is -24.8%. Flapen's verdict: Skip it (47/100).
- **How competitive is the ocean diorama supplies niche?**
- 28 brands and 43 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 51% of demand.
- **What do buyers complain about in ocean diorama supplies?**
- Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 2.2%.
- **When does demand for ocean diorama supplies peak?**
- Demand peaks in Feb–Mar–Apr–May; the busiest month runs 21.3× the quietest.
- **What does it cost to enter the ocean diorama supplies niche?**
- Listings span $5.31–$41.13; the average listing price is $16.73 (sweet spot $15–$100). The average incumbent carries 395 reviews — the moat a new listing must climb.
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