eporcher's Identifications

Very high intertidal (on sea wall).
Brown seaweed, Hollow tubes, some twisted and reddish. Scytosiphon looks similar (hollow tube) but is found lower, isn’t reddish or twisted.
Empress Figurehead beach, Stanley Park

Brown stringy seaweed, not filamentous, opposite branching. The opposite branching helps tell this species apart from the related D. aculeata.
Produces sulphuric acid, many drift specimens already degraded.
Drift specimen. Common.

Empress Figurehead beach, Stanley Park

Drift, attached to bivalve shell, next for Nereocystis luetkeana (blue arrow shows S. latissima).
Second photo shows close-up the two holdfasts. Both highly-branched and “root-like”, but S. latissima holdfast on left has more, thinner, branches (this branched kind of holdfast in kelps is called a “haptera”).
Empress Figurehead, Stanley Park.

Found attached to rock just above water line at low tide. Species was also found on other rocks at a similar position in tidal zone. Species is most abundant at this location at the high tide line attached to seawall.

Also pictured here growing with Fucus are a Pyropia sp. (the reddish brown translucent blades) and an Ulva sp. (the green blades).