Cosign | MARINe


Click here for Long-Term trends

Cosign is located in the Southern Channel Islands. This site is not accessible by the public, as it is on navy-owned San Nicolas Island. Visitation to this site is limited to fishing and tidepooling navy personnel and a handful of researchers. This gently sloping, site consists of extremely uneven terrain, containing many deep cracks and folds.

Cosign biodiversity survey overview

Cosign is predominantly a mixture of consolidated bedrock and boulder fields, and the surrounding area is comprised of a mixture of consolidated bedrock and boulder fields. The primary coastal orientation of this site is west/southwest.

Cosign long-term monitoring overview

Long-Term Monitoring Surveys at Cosign were established in 2015, and are done by Navy Marine Ecology Consortium. Long-Term MARINe surveys currently target the following species: Chthamalus/Balanus (Acorn Barnacles), Mytilus (California Mussel), Endocladia (Turfweed), and Pisaster (Ochre Star). Click here to view Long-Term trends at this site.

For more information about Cosign, please contact Jessica Curran ( or Erica Pollard (