This publication represents one aspect of a larger collaborative effort to survey coastal resources along the Alaska Peninsula during May of 2016. Aerial imaging surveys were conducted for ShoreZone coastal habitat mapping and ground surveys for detailed assessments of geomorphology and marine species assemblages. As a result of this effort an incredible amount of baseline information has been gathered for this remote and poorly studied stretch of coastline. This assessment and collection of benthic marine algae including an extensive digital catalog is the only one of its kind to date and will be an important resource for researchers and resource managers. Support for this body of work was provided by Cook Inlet Regional Citizens Advisory Council, NOAA’s National Marine Fisheries Service - Alaska Fisheries Science Center in conjunction with the larger ShoreZone efforts funded by the Bureau of Ocean Energy Management, Alaska Outer Continental Shelf Region (BOEM Contract: M15PC00008).