Sure we might turn to searches in Unsplash or Pixabay or Pexels or Wikimedia Commons to find open licensed photos/images (we hope you know about those), but there is a wide universe of more specialized collections or ones focused on a specific discipline. Do you know of any?
It would be interesting (to me!) to see examples of ones this community might know about and make regular use of. I thought of this over one of those random stumbles thatr I came across smart (Servier Medical Art) a collection of medical images (for diagrams) available all by a Creative Commons CC BY license. You can browse by medical categories (e.g. Nervous System) or just search.
Here, for example is a diagram for the functional areas of the brain.
This could be useful for a lesson diagram or maybe to build an interactive activity in H5P. Images can be downloaded in web ready PNG or also high resolution vectors in sets as Powerpoint slide format.
What are some of your lesser known subject specific media collections that are useful?
For a related effort and useful media sources, see