Observations that use GIFs https://www.inaturalist.org/projects/animated-observations
Carnivorous plants of the world https://www.inaturalist.org/projects/carnivorous-plants-of-the-world
Observations made while waiting for a bus https://www.inaturalist.org/projects/bus-stop-observations
Birds underwater https://www.inaturalist.org/projects/birds-underwater
Four-leaf clovers https://www.inaturalist.org/projects/four-leaf-clovers-of-inaturalist
Various projects for galls, leafminers, and leaf diseases e.g.
https://www.inaturalist.org/projects/galls-of-north-america
https://www.inaturalist.org/projects/north-american-leafminers
https://www.inaturalist.org/projects/non-metazoan-plant-diseases-of-north-america