How to Tell Apart Mini-guide << view all mini guides S E A W E E D Download PDF Ectocarpus spp. Pylaiella spp. Text by Jordan Chalfant Photos by Jordan Chalfant Design by Celeste Mittelhauser Share Related Mini Guides Mini Guide Membranoptera fabriciana vs. Euthora cristata by Jordan Chalfant Mini Guide Fucus Spiralis, Fucus visiculosus, & Fucus distichus ssp. edentatus by Jordan Chalfant Mini Guide Monostroma grevillei vs. Protomonostroma undulatum by Jordan Chalfant