Umiushi Lab
No. 01Field guide
SEASLUG.WORLD
A sea slug field guide made by divers. Photos from divers around the world, sorted by species. Contributors can keep their own field guide on the site.
Independent maker in Japan
A sea slug field guide and everyday apps, from a small lab in Japan.
Less time spent wondering.
Specimen No. 01Hypselodoris festivaimaginaryLength 30 mm
Stylized drawings of real species. Tap a name to open it in the SEASLUG.WORLD field guide.
No. 01 – 05
Products
No. 02Photo diary
Kasane
What did I wear the last time it was this warm? One photo a day, with the temperature and weather added for you. See it next to the same day last year and the year before.
No. 03Kirerumae (Japan only, in Japanese)
Find the cheapest place to restock household items. Stick a QR code on your washing machine or shelf, scan it when you're about to run out, and it compares Rakuten, Amazon and Yahoo! Shopping, including shipping and points. kirerumae.com
No. 04AI Security Check & Fix (coming soon)
WordPress and every plugin can be up to date and a site still has a weak spot: the code built just for it. This service uses AI to read that custom code, reports what an outsider could see or change, and repairs small weaknesses after the owner approves each change. For WordPress and EC-CUBE, a store system used in Japan. Read more · Demo video (3 min, Japanese)
No. 05Data migration plugin (in Japanese)
Moves members, products, categories and orders from older EC-CUBE (2.x / 3.x / 4.0 / 4.1) to 4.2 / 4.3. Owners Store · other plugins
About
Umiushi Lab is a small app studio in Japan run by Nobuhiko Kimoto. "Umiushi" means sea slug in Japanese. I write about why I make things, what I tried and the numbers on Substack.
Contact: info@umiushi-lab.com (English or Japanese)