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Pelagophycus San Clemente Island.jpg
Pelagophycus porra washed up on San Clemente Island
Scientific classification
(unranked): SAR
Superphylum: Heterokonta
Class: Phaeophyceae
Order: Laminariales
Family: Laminariaceae
Genus: Pelagophycus
Species: Pelagophycus porra

Pelagophycus is a 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 60° Fahrenheit (15.56° Celsius.)

It grows in subtidal forests in the coastal waters off southern California and northwestern Baja California Peninsula, in waters of 20 metres (66 ft) to 90 metres (300 ft) deep, anchored by a holdfast in sedimentary or loose sediment bottoms.[1]

Three ecotypes are recognized:

Pelagophycus giganteus
Pelagophycus porra
Pelagophycus intermedius [1]


  1. ^ a b Guiry, M.D. & Guiry, G.M. 2013. Pelagophycus Areschoug, 1881, AlgaeBase, National University of Ireland, Galway.; searched on 7 February 2013.

Further reading[edit]

  • Fejtek, Stacie; Edwards, Matthew; Kim, Kwang Young (January 2011). "Elk Kelp, Pelagophycus porra, distribution limited due to susceptibility of microscopic stages to high light". Journal of Experimental Marine Biology and Ecology. 396 (2): 194–201. doi:10.1016/j.jembe.2010.10.022.