ocean diorama supplies
Skip itA small market ($11K/yr) — this niche doesn't clear our bar today.
Brand share
Great51%top-5 brand share — no brand owns this niche
Competition
Great34%top-5 click share — an open shelf
Review moat
Great394.93avg incumbent reviews — the moat a new listing must climb
Avg price
Great$16.73avg listing price — sweet spot $15–$100
Price range
Good$5.31–$41.13cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.2%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Bad1.5%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
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
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.Peak months: Feb, Mar, Apr, May · busiest ÷ quietest = 21.3×
Top ocean diorama supplies search terms
- ocean diorama supplies14K/yr
- ocean diorama10K/yr
- ocean habitat project supplies10K/yr
- ocean diorama kit9K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$9.824.6★7,729 rev
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$41.134.8★7 rev
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$39.824.5★102 rev
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$18.064.6★119 rev
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$38.744.6★23 rev
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$26.071 rev
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$30.711 rev
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$19.753 rev
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$30.850 rev
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$41.137 rev
Trending
90-day click momentumDuraaamo 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$19.754.3★
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$30.850.0★
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$30.715.0★
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$26.075.0★
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$7.404.4★
What buyers say about ocean diorama supplies
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“Bright colors”
“Very good for the price”
“Fun hide and seek”
“Worked great for the design”
“Exactly as pictured and described”
“Great size”
“Easy to assemble”
“The material feels durable”
“They have good stickiness”
What buyers complain about
“is smaller than the interior floor dimension”
“It broke sent it to my great granddaughter”
“Cheap aquarium plants”
“a bit expensive”
“The product description doesn't specify the material”
“Not good for my project”
“Not at all what was pictured”
“These were decent decent quality the sizes were variable the colors weren't the greatest”
“The smell is awful”
“BUT NO INSTRUCTIONS”
Top return reasons
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.