Researchers are saying they will be really useful for studying wildlife.
That's roughly a quote from the Nature podcast
https://pca.st/episode/362f90ca-4f21-444c-92ed-d4e7d3ecbf51
Presumably this use case is because wildlife biology drives such a large portion of research spending. It's conceivable other uses will be discovered
That's pretty fascinating, I needed to see a visual (https://www.youtube.com/watch?v=boB6qu5dcCw).