Humboldt State supports an active citizen science project to observe and document river otter populations in the ~watershed of Humboldt Bay in Northern California. It's a cool model for engaging with the community to help protecting its natural resources. I could easily imagine similar resources in other regions. * https://hsu.reclaim.hosting/NorthCoastOtters/
Some context:
https://www.opb.org/article/2024/07/03/sea-otters-spotted-of...
There are also some YouTube channels that share the days of some otters in captivity, not sure about how I feel about that.
Within a couple of years they had completely wiped out the local moorhen population.
Nature is complicated