iPhone Screenshots


Updated January 2020. Covers 357 fish seen by scuba divers (and all fish seen by snorkelers). Flip through screens like pages of a book, or find a fish quickly by color or shape. Up to 5 photos per fish -- showing juveniles, males, females, color variations. Each fish has a professional quality video also.

- Targeted to scuba divers and advanced snorkelers.
- 357 species / 895 photos
- Identify fish by color, shape, family group, scientific name, Hawaiian name, English name.
- Videos of all fish (requires internet)
- Logbook: save fish, add notes, share Logbook.
- Works great on iPads too.

Created by John Hoover, author of Hawaii's best-selling marine life ID books: The Ultimate Guide to Hawaiian Reef Fishes, and: Hawaii's Sea Creatures, a Guide to Hawaii's Marine Invertebrates. Check them out on Amazon.

What’s New

Version 2.2

Minor improvements.

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

Teun64 ,

Great app for snorkeling and scuba

If you are planning to snorkel or scuba anywhere in Hawai’i, this is an awesome app to have. The app is very comprehensive, intuitive, and easy to use. The photos and videos are great for identifying each species. Identification is made easier by filtering based on color, shape, name, or common species. The descriptions provide just the right amount of detail as well as some interesting tidbits about behavior and ecology for each species. Everyone wants to know what they are seeing under water and having this app doubled the fun of our snorkeling trips!

ImperialPlanetologist ,

When ya gotta know that fish!

Saw a fish snorkeling in Maui I could not for the life of me find anywhere to identify, and I’ve got some serious search engine mojo. Was driving me nuts, so bought this app and found it quickly. Love that I can snorkel and come back to review what I’ve seen.


John P Hoover
473.5 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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