KDP categories · Top KDP authors
Marine Life (Animals, Books): Amazon KDP category data
Amazon Books Best Sellers data for Marine Life (Animals, Books), updated Nov 3, 2026: median price $7.72, median 1,305 reviews, average rating 4.7 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $6.49 – $9.75 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 0% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Only 0% of its best sellers are under 90 days old, fewer than in 99% of Books categories: established titles hold the list.
- Its median reviews are 16% of the parent category Animals (8,310), one of the easier corners under it.
- At $7.72 its median price is below 96% of Books categories, so it is a volume game.
Top 10 Marine Life best sellers
-
Ocean Friends - Touch and Feel Board Book - Sensory Board Book
- List rank#1
- Price$8.80
- Rating4.8
- Reviews3,698
-
SpongeBob Goes to the Doctor (SpongeBob SquarePants)
- List rank#2
- Price$3.99
- Rating4.2
- Reviews3,276
-
The Pout-Pout Fish
- List rank#3
- Price$5.27
- Rating4.8
- Reviews28,040
-
How to Catch® a Mermaid: A Magical Ocean Themed Adventure
by Adam Wallace
- List rank#4
- Price$7.88
- Rating4.8
- Reviews35,380
-
School Zone Go Fish Alphabet Game Cards: 56 ABC Flash Cards for Preschool & Kindergarten, Upper & Lowercase Letters, Phonics, Word-Picture Recognition, Parent & Baby Animals, Ages 4+
by School Zone
- List rank#5
- Price$3.49
- Rating4.7
- Reviews16,751
-
The Snail and the Whale
- List rank#6
- Price$5.27
- Rating4.8
- Reviews15,567
-
Clark the Shark: Too Many Treats: A Funny Self-Control Story About Temptation for Children (Ages 4–8) (I Can Read Level 1)
by Bruce Hale
- List rank#7
- Price$4.79
- Rating4.7
- Reviews4,841
-
My Sticker Paintings: Ocean Animals: 10 Magnificent Paintings (Happy Fox Books) Sticker-by-Number for Kids 6-10 - Jellyfish, Dolphins, Penguins, and Sharks, with 36 to 149 Stickers per Design
by Logan Powell
- List rank#8
- Price$7.48
- Rating4.5
- Reviews1,066
-
The Wild Robot Protects (Volume 3)
by Peter Brown
- List rank#9
- Price$6.56
- Rating4.8
- Reviews5,806
-
Baby Beluga (Raffi Songs to Read)
by Raffi
- List rank#10
- Price$5.22
- Rating4.9
- Reviews4,135
Same niche in Kindle eBooks: Fish & Marine Life
FAQ
Is Marine Life a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 1,305 reviews and sells for $7.72.
How many reviews do you need to rank in Marine Life?
The median best seller has 1,305 reviews, and 4% of them have fewer than 100.
What do Marine Life best sellers cost?
The median price is $7.72; half of the best sellers are priced between $6.49 and $9.75.
Can new books break into Marine Life?
0% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.