While spawning coho in Central California once numbered in the tens of thousands, estimates now put their numbers at fewer than 500. Learning about the coho population through monitoring helps researchers target efforts aimed at helping the coho recover. Fishery Biologist Mike Reichmuth and Intern Ben Atencio discuss our endangered coho salmon and how they are monitored in the Bay Area National Parks.
- 4 minutes, 53 seconds
Park hydrologist Brannon Ketcham talks about the lifecycle of endangered coho salmon and threatened steelhead trout, and how they use the different habitats found in park streams. He also describes how Point Reyes National Seashore and the Golden Gate National Recreation Area are monitoring these species and working to restore their habitats.
- 6 minutes, 34 seconds
Dual-Frequency Identification Sonar (DIDSON) system uses sonar to produce images of fish migrating upstream on Lagunitas Creek. In this clip you can see a female and male that have become a pair and are getting ready to construct a redd.
- 20 seconds
Last updated: September 14, 2016