Practice identifying wildlife from real photos
KnowKi quizzes you on species from real iNaturalist photos: the photo, four names, and the right answer explained with more photos. Choices start clearly different and grow closer as you learn.
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Quizzes that adapt
New species get easy wrong answers; species you know well get their closest relatives and the ones you have mixed up before.
Look-alike duels show two photos and ask which is which.
Questions
What can I be quizzed on?
Birds, mammals, plants, insects, spiders, reptiles and amphibians, fish, crabs, sea slugs and mollusks.
Where are the photos from?
Research-grade iNaturalist observations, each credited to its photographer.
Free, with no ads, no account and no purchases. Photos and observations come from iNaturalist contributors, each credited with its license.
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