''Pelagophycus'' is a monotypic genus of kelp. It is found in deep waters off the west coast of central North America. The species ''Pelagophycus porra'', also known as Elk kelp, grows in temperatures of no higher than . It grows in subtidal forests in the coastal waters off southern California and northwestern Baja California Peninsula, in waters of to deep, anchored by a holdfast in sedimentary or loose sediment bottoms.Guiry, M.D. & Guiry, G.M. 2013
''Pelagophycus'' Areschoug, 1881
AlgaeBase, National University of Ireland, Galway. http://www.algaebase.org; searched on 7 February 2013.
Three ecotypes are recognized: :''Pelagophycus giganteus'' :''Pelagophycus porra'' :''Pelagophycus intermedius''


Further reading

* {{Taxonbar|from=Q15159638|from2=Q7161168 Category:Laminariaceae Category:Flora of the Pacific Category:Marine biota of North America Category:Flora of California Category:Flora of Baja California Category:Flora of Baja California Sur Category:Flora of the West Coast of the United States Category:Natural history of the Channel Islands of California Category:Laminariales genera Category:Monotypic brown algae genera