Hydroporus mannerheimi
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Dytiscidae
- genus: Hydroporus
- species: Hydroporus mannerheimi
North Bend- Port Townsend
Washington
United States
Hydroporus mannerheimi North Bend Port Townsend
Sparwood