link to AFSC home page
Mobile users can use the Site Map to access the principal pages

link to AFSC home page link to NMFS home page link to NOAA home page

NOAA Technical Memorandum NMFS-AFSC-351

Publications Overview
Pubs Database
New Publications
Poster Presentations
Processed Reports
Quarterly Report:
Current Issue
Feature Articles
Feature Archives
RACE Cruise Archives
Reports to Industry
Stock Assessments
Tech Memos
Yearly Lists

Results of the 2012 and 2014 underwater camera surveys of the Aleutian Islands


The 2012 and 2014 Underwater Camera Surveys of the Aleutian Islands conducted by NOAA Fisheries were the first comprehensive underwater camera surveys of corals and sponges in the Aleutian Islands. Two-hundred sixteen transects were successfully completed in an area which extended west from Akutan Island to Near Pass and north from Amchitka Island to the top of Bowers Bank. Each randomly selected transect was assigned to one of six geographical regions. Demersal populations of corals, sponges, hydrocorals, sea pens, sea whips, fishes, and crabs were sampled by drifting a stereo drop camera for 15 minutes at each transect. Survey results presented in this report include fish and crab composition and density, coral, sponge, sea pens, and sea whip density and height, and substrate composition for each transect. The Appendix lists survey region, start position, distance towed, swath, mean depth, and mean temperature for each transect completed.

View Online (.pdf, 121.5 MB).

            | Home | Site Map | Contact Us | FOIA | Privacy | Disclaimer | | Accessibility | Print |           doc logo