Where to Find and Catch Surskit
From Pokemon Go Wiki
Surskit are found and captured in Nest and Habitat locations.
Nests
Surskit Nests are locations that consistently spawn Surskit.
Habitats
Surskit Habitats are spawn locations where Surskit is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: