KDP categories · Top KDP authors
Underwater (Photography, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Underwater (Photography, Kindle eBooks), updated Nov 1, 2026: median price $8.47, median 3 reviews, average rating 4.5 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $5.74 – $13.34 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 4% |
| Books on the list | 57 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 2% of the parent category Photography (141), one of the easier corners under it.
- Its review barrier is lower than in 92% of Kindle eBooks categories: the median best seller has only 3 reviews, so new books can chart with few.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Kindle eBooks categories: established titles hold the list.
Top 10 Underwater best sellers
-
The Shark Handbook: Third Edition: The Essential Guide for Understanding the Sharks of the World (Shark Week Author, Ocean Biology Books, Great White Shark, ... and Nature Books, Gifts for Shark Fans)
by Greg Skomal
- List rank#1
- Price$7.99
- Rating4.8
- Reviews256
-
Secrets of the Octopus
- List rank#2
- Price$18.99
- Rating4.7
- Reviews459
-
Journeys in the Wild: From award-winning cameraman for David Attenborough's ‘A Life on Our Planet'
by Gavin Thurston
- List rank#3
- Price$4.99
- Rating4.6
- Reviews445
-
OM SYSTEM TOUGH TG-7 USER GUIDE: Set Up, Operate and Capture Beautiful Underwater and Adventure Photos with Tough TG-7 for Photographers of All Levels
by Earl Blackburn
- List rank#4
- Price$8.99
- Reviews-
-
The World Beneath: The Life and Times of Unknown Sea Creatures and Coral Reefs
by Richard Smith
- List rank#5
- Price$17.99
- Rating4.7
- Reviews617
-
Wonders: Spectacular Moments in Nature Photography
by Rhonda Rubinstein
- List rank#6
- Price$0.99
- Rating4.4
- Reviews18
-
The Underwater Wild: My Octopus Teacher's Extraordinary World
by Craig Foster
- List rank#7
- Price$15.99
- Rating4.7
- Reviews263
-
Life in the Salish Sea – Nudibranchs: An Underwater Puget Sound Book Series
by Thom Robbins
- List rank#8
- Price$4.99
- Rating5.0
- Reviews1
-
Shapeshifters: The Wondrous World of Jellyfish
by Lisa-Ann Gershwin
- List rank#9
- Price$15.39
- Rating4.7
- Reviews121
-
GoPro Hero 13 Black User Guide: Learn How to Use GoPro Action Camera’s with Recommended Presets, Accessories, Tips and Tricks (GoPro Hero Series)
by Calvin Robertson
- List rank#10
- Price$7.99
- Rating4.5
- Reviews38
FAQ
Is Underwater a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 3 reviews and sells for $8.47.
How many reviews do you need to rank in Underwater?
The median best seller has 3 reviews, and 89% of them have fewer than 100.
What do Underwater best sellers cost?
The median price is $8.47; half of the best sellers are priced between $5.74 and $13.34.
Can new books break into Underwater?
4% 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.