iNaturalist (opens in new tab)

About: <blockquote>iNaturalist helps you identify the plants and animals around you while generating data for science and conservation. Get connected with a community of millions scientists and naturalists who can help you learn more about nature! What’s more, by recording and sharing your observations, you’ll create research-quality data for scientists working to better understand and protect nature.</blockquote> Founded by Ken-ichi Ueda, Nate Agrin, and Jessica Kline. Based in San Rafael,...