Cooperative Surveys Using Commerical Longline and Mini-submersible

Researchers at the SWFSC Fisheries Ecology Division work with a commercial fisherman to compare survey methods used to determine groundfish abundance, size and species composition, and catchability on the continental shelf north of Monterey Bay. On this video from the mini-submersible you can see the paired red laser dots, 20 cm apart, used to estimate fish size underwater. Fish caught on the longline gear include bocaccio, yellowtail rockfish, greenspotted rockfish, and a spiny dogfish.
Learn More...