![Alaska Fisheries Sonar](/static/fishing/images/research/sonar/logo.jpg)
Alaska Fisheries Multimedia
Videos
![](/static/fishing/images/research/sonar/didson_video_thumbs.jpg)
DIDSON fish videos
Sonar video of sockeye salmon, king salmon, seals and hooligan detected using DIDSON.
![](/static/fishing/images/research/sonar/kenairiver_video_thumbs.jpg)
Kenai River king salmon
Sonar site gillnet crew radio tag, sample and measure Kenai River king salmon.