Hermit Crab Sponge
FailPrices span $2.86–$12.98, mostly outside the sweet spot, so Hermit Crab Sponge is a Fail.
- Flapen Score
- 48 / 100Ranks 2,345 of 3,978 Pet Supplies niches · −3 vs the category median of 5148
- Market size
- $30K/yr26K searches / yr
- 90-day growth
- +45.2%search demand this quarter
- Competition
- 69%top-5 click share · 9 brands · 24 sellers
Flapen Score
Hermit Crab Sponge against its category
The dotted line is the Pet Supplies average. Past it, Hermit Crab Sponge is stronger. Inside it, weaker.
Market
The Hermit Crab Sponge market on Amazon at a glance
Shoppers on Amazon United States searched for Hermit Crab Sponge 26K times last year and spent an estimated $30K. The top 5 brands take 84% of clicks. Demand peaks in Jul–Aug–Sep. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 13.3% of those searches ended in a purchase.
Shoppers searched for this 26K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 13.3% of those searches ended in a purchase. Searches in the last 90 days moved +45.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $30K a year.
- Searches, last 12 months
- 26K
- Growth, 90 days vs prior 90
- +45.2%
- Conversion, latest week
- 13.3%
- Market size, estimated
- $30Ka year
- Peak month
- August2.7× the quietest month
- Top search term
- hermit crab sponge16K searches a year
02 · Price
A sale here is worth $8.71.
Listings sell for $8.71 on average, from $2.86 to $12.98. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 100 to 250 of them. At $8.71 that is $871 to $2K a year per listing.
- Average price
- $8.71under the $15 to $100 sweet spot
- Price range
- $2.86–$12.98
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $871–$2K
- Returns
- 0.8%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
69% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 5.6% of listings are out of stock. The average listing ranks #295 within Fish & Aquatic Pets. It carries 501 reviews at 4.46 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 69%
- Prime listings
- 100%
- Out of stock, average day
- 5.6%
- Average rank
- #295in Fish & Aquatic Pets
- Average rating
- 4.46 starsAmazon United States average 4.42 stars
- Average reviews
- 501per listing
- Listings tracked
- 13
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 69 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 69 months
Products
Top Hermit Crab Sponge products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Naroa Natural Hermit Crab Sponges - Pack of 5 | Unbleached Sea Sponge for Water Drinking Safety | Aquarium Decor Balance Tank Humidity | Crab Supplies Accessories
- Price
- $11.95
- Rating
- 4.5/5
- Reviews
- 116
- Age
- 2y ago

Constantia Pets Hermit Crab- All Natural Sea Sponges - 5 Pack Unbleached Provides Nutrients Safer Drinking Helps Maintain Habitat Tank Humidity and Aquarium Decor Premium Care for Your Crabs
- Price
- $12.98
- Rating
- 4.6/5
- Reviews
- 1,840
- Age
- 8y ago

Awesome Aquatic 5 Unbleached Natural Hermit Crab Sea Sponges Water Dish Humidity & Habitat
- Price
- $11.83
- Rating
- 4.6/5
- Reviews
- 252
- Age
- 8y ago

Florida Marine Research SFM33336 3-Pack Natural Small Animal Sponge
- Price
- $8.01
- Rating
- 4.6/5
- Reviews
- 559
- Age
- 16y ago

SunGrow Hermit Crab Sponges for Water 3 Pack Unbleached Accessories & Supplies Pet Crab Sponges Provide Nutrients and Maintain Tank Humidity Water Dish Yellow Real Sea Sponges 2 x 1
- Price
- $2.86
- Rating
- 4.4/5
- Reviews
- 446
- Age
- 6y ago
Trending
estimated 90-day click momentum
4 Natural Hermit Crab Sea Sponges Water Dish Humidity & Habitat
- Price
- $9.44
- Rating
- 4.6/5
- Reviews
- 252
- Age
- 8y ago

Green Sponge Accessories for Hermit Crab Habitat Moisture Supply for Maintaining Tank Humidity 10PCS
- Price
- $6.83
- Rating
- 4.4/5
- Reviews
- 47
- Age
- 4y ago

Soft Natural 6 Silk Sponges 1.5-3 Cosmetic Makeup Application Removal Face Eye Nail Cleaning Like Cotton Balls Awesome Aquatic Creating The Perfect Home Bath & Shower Experience
- Price
- $9.06
- Rating
- 4.2/5
- Reviews
- 115
- Age
- 3y ago

Naroa Natural Hermit Crab Sponges - Pack of 5 | Unbleached Sea Sponge for Water Drinking Safety | Aquarium Decor Balance Tank Humidity | Crab Supplies Accessories
- Price
- $11.95
- Rating
- 4.5/5
- Reviews
- 116
- Age
- 2y ago

Awesome Aquatic 5 Unbleached Natural Hermit Crab Sea Sponges Water Dish Humidity & Habitat
- Price
- $11.83
- Rating
- 4.6/5
- Reviews
- 252
- Age
- 8y ago
Newest
by launch date
Naroa Natural Hermit Crab Sponges - Pack of 5 | Unbleached Sea Sponge for Water Drinking Safety | Aquarium Decor Balance Tank Humidity | Crab Supplies Accessories
- Price
- $11.95
- Rating
- 4.5/5
- Reviews
- 116
- Age
- 2y ago

Soft Natural 6 Silk Sponges 1.5-3 Cosmetic Makeup Application Removal Face Eye Nail Cleaning Like Cotton Balls Awesome Aquatic Creating The Perfect Home Bath & Shower Experience
- Price
- $9.06
- Rating
- 4.2/5
- Reviews
- 115
- Age
- 3y ago

Hermit Crab Sponges for Water 10 Pack Unbleached Hermit Crab Accessories & Supplies Pet Crab Sponges Provide Nutrients and Maintain Tank Humidity Water Dish Yellow Real Sea Sponges 2 x 1
- Price
- $6.88
- Rating
- 4.4/5
- Reviews
- 446
- Age
- 3y ago

Green Sponge Accessories for Hermit Crab Habitat Moisture Supply for Maintaining Tank Humidity 10PCS
- Price
- $6.83
- Rating
- 4.4/5
- Reviews
- 47
- Age
- 4y ago

12 Pieces Hermit Crab Sea Sponges - Unbleached Supplies for Maintaining Tank Humidity - Pet Accessories Providing Nutrients
- Price
- $9.26
- Rating
- 4.3/5
- Reviews
- 144
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 69% of clicks. Leaders hold, but buyers still shop past them.
Brands
9 falling
Sellers
24
Est. top-5 brand share
84%
Top 20: 100%
Est. top-5 click share
69%
Top 20: 100%
Open market
8%
- Naroa25%
- Awesome Aquatic23%
- Constantia Pets18%
- SunGrow10%
- Florida Marine Research9%
- FolkArt8%
- Open — no brand owns it (3 brands, 8%)
Demand
Hermit Crab Sponge search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jul, Aug, Sep · busiest ÷ quietest = 2.7×
Search terms
Top Hermit Crab Sponge search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- hermit crab sponge16K/yr
- hermit crab sponge for water7K/yr
- hermit crab sponges3K/yr
Reviews and returns
What reviews say buyers love and hate about Hermit Crab Sponge
We read the reviews and the return reasons for every product selling here.
“Too small”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Hermit Crab Sponge questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









