iPhone Screenshots


Seaweed Sorter helps users identify more than 100 species of macroalgae commonly found along the west coast of British Columbia, Canada, including many species that extend from Alaska down to Washington, Oregon, and northern California.

Unlike printed dichotomous keys, which use jargon and often require specialized knowledge, Seaweed Sorter uses easy-to-understand, illustrated questions that assume no prior knowledge and allows users to skip questions at any time.

Seaweed Sorter includes more than 250 photos, current and former names, taxonomic details, clear morphological and ecological descriptions, and lists of other seaweeds that “could be confused with” your specimen – all curated by Dr. Patrick Martone (Associate Professor of Phycology, UBC). Books can be quickly out-of-date, but Seaweed Sorter content will be updated frequently with taxonomic revisions, additional photos, new species, and more. Plus, content is available anytime and doesn’t require an internet connection, making Seaweed Sorter an excellent companion on any trip to the coast.

Great for educators, students, consultants, and naturalists!

What's New

Version 1.2.3

As advertised, the Seaweed Sorter continues to get better and more comprehensive!
- Added 4 new species: Dictyosiphon sinicola, Laminaria yezoensis, Saccharina nigripes, Zostera marina
- Added 30 new photos, including several of Phyllospadix root and flowers
- Refined descriptions of several species
- Corrected duplicate error in "confused with" section of Costaria costata

**Your comments and suggestions are welcome (seaweedsorter@gmail.com), and please rate and endorse on the App Store! Thanks, seaweed lovers! Happy sorting!


Patrick Martone
133.6 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2018 Patrick T. Martone


  • Family Sharing

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

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