Mermaid Tail
Worth a lookShows demand growing +130.8% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+130.8%90-day search growth — must beat 0% to launch
Avg price
Incredible$33.35avg listing price — sweet spot $15–$100
Price range
Great$11.08–$80.21cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great35%top-5 click share — an open shelf
Review moat
Good677.36avg incumbent reviews — the moat a new listing must climb
Brand share
Good69%top-5 brand share — brands hold most of the demand
Market size
Good$386K$386K/yr · 2.0M searches
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay3.9%return rate — above 5% kills the launch gate
Conversion
Bad0.6%search→purchase rate — share of searches ending in a sale
Is mermaid tail profitable on Amazon?
According to Flapen's Amazon United States niche tracking, mermaid tail is a $386K/yr Amazon United States market (2.0M searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 63/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
mermaid tail market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 15K–20K
- avg 250–500/product
- Revenue / yr
- $500K–$667K
- units × avg price
- Conversion rate
- 0.6%
- Avg BSR
- #9,943
- Page quality
- 0%
- Prime
- 77%
- Sponsored
- 93%
- Out of stock
- 2.0%
- Avg brand age
- 34 months
- Avg seller age
- 156 days
Competition: brands, sellers & click share
Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.Brands
14 falling
Sellers
22
Top-5 brand share
69%
Top 20: 100%
Top-5 click share
35%
Top 20: 74%
Open market
24%
- Body Glove20%
- Superband16%
- Sun Tails13%
- DNFUN10%
- Fin Fun9%
- Paljaca7%
mermaid tail demand & seasonality
Weekly Amazon search volume, last 104 weeks — +130.8% search growth over the last 90 days.Peak months: Jun, Jul, Aug · busiest ÷ quietest = 4.6×
Top mermaid tail search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- mermaid tail for swimming545K/yr
- mermaid tail for swimming kids218K/yr
- mermaid tail550K/yr
- kids mermaid tails for swimming51K/yr
- mermaid tails77K/yr
- mermaid tail for kids54K/yr
- mermaid tails for girls140K/yr
- mermaid tail adult41K/yr
- cola de sirena para nias58K/yr
- mermaid tail for swimming adult25K/yr
Top mermaid tail products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.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
Mermaid Linden Kids Monofin - Pink
Body Glove$41.964.6★2,608 rev
Mermaid Linden Kids Monofin-Blue
Body Glove$38.864.6★2,608 rev
Mermaid Tail Blanket for Kids Soft Wearable Mermaid Tail Blankets Super Plush Flannel Sleeping Snuggle Blanket Gifts for Girls 4~12 Year (Purple)
Paljaca$14.734.8★311 rev
DNFUN Mermaid Tail for Swimming for Adults Without Monofin.
DNFUN$26.024.1★133 rev
DNFUN Mermaid Tail for Swimming for Adults Without Monofin.
DNFUN$23.224.1★133 rev
Newest
by launch date
Mermaid
Sun Tails$31.5224 rev
Mermaid
Sun Tails$30.0624 rev
Mermaid
Sun Tails$70.2624 rev
Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Extra Small Asian Magenta
Fin Fun$66.9318 rev
Wfundeals Little Girls Swimsuits 3Pcs Bathing Suits Princess Bikini Set with Cover Up Skirt for 6-7 Years Toddler Purple
Wfundeals$24.5580 rev
Trending
90-day click momentumMermaid
Sun Tails$31.524.7★
Mermaid
Sun Tails$30.064.7★
Mermaid
Sun Tails$70.264.7★
GALLDEALS Girls Swimsuit 3 Piece Bathing Suits Flounce Ruffle Tankini Set Beach Swimwear with Cover Ups Skirt for 3-10 Years Blue
GALLDEALS$24.434.8★
Mermaid Tail and Monofin for Swimming with MER-Shield Tip Protection Adult Sizes (Blue Lagoon - Turquoise Monofin Adult M (JM 8-10))
Sun Tails$79.884.5★
What reviews say buyers love and hate about mermaid tail
What buyers praise and complain about, mined from review topics.What buyers love
“Beautiful, great quality tail”
“the adjustable sizing is FANTASTIC”
“As advertised”
“Bought for a gift”
“Beautiful and durable”
“Good for the price”
“Colors are bright”
“My child was heartbroken because it is such a fun monofin”
“The quality and the design are amazing”
“Nice material and colors”
What buyers complain about
“Too small”
“Broke after a few uses”
“I found this crown to be too heavy for my four year old”
“Not well made”
“very thin”
“Maybe this should not be advertised for small children”
“feel its too cheap”
Top return reasons
Common mermaid tail questions
- Is mermaid tail profitable to sell on Amazon United States?
- The niche generates $386K/yr across 44 tracked products. 4 of 12 products launched in the last 360 days are still selling. 90-day search growth is +130.8%. Flapen's verdict: Worth a look (63/100).
- How competitive is the mermaid tail niche?
- 14 brands and 22 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 69% of demand.
- What do buyers complain about in mermaid tail?
- Top complaints mined from reviews: Size-Overall, Durability, Weight Heavy. The return rate is 3.9%.
- When does demand for mermaid tail peak?
- Demand peaks in Jun–Jul–Aug; the busiest month runs 4.6× the quietest.
- What does it cost to enter the mermaid tail niche?
- Listings span $11.08–$80.21; the average listing price is $33.35 (sweet spot $15–$100). The average incumbent carries 677 reviews — the moat a new listing must climb.