KDP categories · Top KDP authors
Marine Life (Oceans & Seas, Books): Amazon KDP category data
Amazon Books Best Sellers data for Marine Life (Oceans & Seas, Books), updated Nov 2, 2026: median price $15.91, median 176 reviews, average rating 4.6 and a KDPTop opportunity score of 30/100 (highly competitive).
| Price range (middle 50%) | $11.99 – $24.04 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 2% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Only 2% of its best sellers are under 90 days old, fewer than in 93% of Books categories: established titles hold the list.
- Its median reviews are 37% of the parent category Oceans & Seas (472), one of the easier corners under it.
Top 10 Marine Life best sellers
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In the Heart of the Sea: The Tragedy of the Whaleship Essex
- List rank#2
- Price$12.14
- Rating4.5
- Reviews8,071
-
The Soul of an Octopus: A Surprising Exploration into the Wonder of Consciousness
- List rank#3
- Price$10.48
- Rating4.6
- Reviews11,212
-
The Truth About Animals: Stoned Sloths, Lovelorn Hippos, and Other Tales from the Wild Side of Wildlife
by Lucy Cooke
- List rank#4
- Price$10.48
- Rating4.5
- Reviews578
-
Other Minds: The Octopus, the Sea, and the Deep Origins of Consciousness
by Peter Godfrey-Smith
- List rank#5
- Price$11.49
- Rating4.4
- Reviews5,856
-
Florida's Seashells: A Beachcomber's Guide
by Blair Witherington
- List rank#6
- Price$9.27
- Rating4.8
- Reviews1,608
-
The Place of Tides: A Transformative Nature Memoir of Isolation, Forgiveness, and Self-Discovery on a Remote Norwegian Island
by James Rebanks
- List rank#7
- Price$16.16
- Rating4.6
- Reviews1,329
-
The Outermost House: A Year of Life On The Great Beach of Cape Cod
by Henry Beston
- List rank#8
- Price$10.33
- Rating4.5
- Reviews969
-
The Wreck of the Mentor: A True Story of Death, Despair, and Deliverance in the Age of Sail
- List rank#9
- Price$15.09
- Rating4.0
- Reviews555
-
Creative Haven Sea Life Color by Number Coloring Book (Adult Coloring Books: Sea Life)
by George Toufexis
- List rank#10
- Price$8.98
- Rating4.5
- Reviews1,655
Same niche in Kindle eBooks: Marine Life
FAQ
Is Marine Life a good niche for Amazon KDP?
Its KDPTop opportunity score is 30/100, which makes it highly competitive. The median best seller has 176 reviews and sells for $15.91.
How many reviews do you need to rank in Marine Life?
The median best seller has 176 reviews, and 39% of them have fewer than 100.
What do Marine Life best sellers cost?
The median price is $15.91; half of the best sellers are priced between $11.99 and $24.04.
Can new books break into Marine Life?
2% 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.