There were several news articles this week profiling a project to ID individual brown bears in British Columbia and Alaska. The open access research article is available here: Automated facial recognition for wildlife that lack unique markings: A deep learning approach for brown bears
This Vancouver Sun article on the study also notes that UBC’s Marine Mammal Research Unit is focused on creating a similar system to identify orcas. Happywhale is doing something similar with humpback flukes, and they use photos from some iNat contributors to add to their data (here is my single contribution to that project).
And this is the link to a NYT article on the bear research, but you will need to create a free account to read it. An interesting link in the story is to Wildlabs.net, a site described as “an online broker of collaborations between technologists and conservationists”.