On August 19, high tide brought a lot of marine algae up in the wrack. Most of what I encountered were species that are normally attached to rocky or substrate or cobble. This material was detached which was kind of surprising because there had been no recent storms or damaging waves. Nevertheless, there it was.
The marine algae shown above is Chondracanthus exasperatus; it’s called Turkish towel. It lives in the low intertidal and subtidal zones and tattered remains are frequently encountered on outer shore beaches. Seaweeds of Alaska is a useful resource for marine algae. The wrack line is full of interesting algae and other things like shells, birds and floats. If you want to see some other things I have encountered in the wrack, check out Wrack Line.