Bull kelp, Nereocystis luetkeana, a northwestern American species.
Used by coastal indigenous peoples to create fishing nets.

Giant kelp, Macrocystis pyrifera, the largest seaweed.
Found in the Pacific coast of North America and South America.

Kombu, Saccharina japonica (formerly Laminaria japonica) and others, several edible species of kelp found in Japan.

Species of Laminaria in the British Isles;
Laminaria digitata (Hudson) J.V. Lamouroux (Oarweed; Tangle)
Laminaria hyperborea (Gunnerus) Foslie (Curvie)
Laminaria ochroleuca Bachelot de la Pylaie
Saccharina latissima (Linnaeus) J.V.Lamouroux (sea belt; sugar kelp; sugarwack)
Species of Laminaria worldwide, listing of species at AlgaeBase:
Laminaria agardhii (NE.
America)
Laminaria bongardina Postels et Ruprecht (Bering Sea to California)
Laminaria cuneifolia (NE.
America)
Laminaria dentigera Klellm. (
California - America)
Laminaria digitata (NE.
America)
Laminaria ephemera Setchell (Sitka, Alaska, to Monterey County, California - America)
Laminaria farlowii Setchell (Santa Cruz, California, to Baja California - America)
Laminaria groenlandica (NE.
America)
Laminaria longicruris (NE.
America)
Laminaria nigripes (NE.
America)
Laminaria ontermedia (NE.
America)
Laminaria pallida Greville ex J. Agardh (South Africa)
Laminaria platymeris (NE.
America)
Laminaria saccharina (Linnaeus) Lamouroux, synonym of Saccharina latissima (north east Atlantic Ocean, Barents Sea south to Galicia - Spain)
Laminaria setchellii Silva (Aleutian Islands, Alaska to Baja California America)
Laminaria sinclairii (Harvey ex Hooker f. ex Harvey) Farlow, Anderson et Eaton (Hope Island, British Columbia to Los Angeles, California - America)
Laminaria solidungula (NE.
America)
Laminaria stenophylla (NE.
America)
Other species in the Laminariales that may be considered as kelp:
Alaria esculenta (North Atlantic)
Alaria marginata Post. &
Rupr. (
Alaska and California - America)
Costaria costata (C.Ag.)
Saunders (Japan; Alaska, California - America)
Ecklonia brevipes J. Agardh  (Australia; New Zealand)
Ecklonia maxima (Osbeck) Papenfuss (South Africa)
Ecklonia radiata (C.Agardh) J. Agardh (Australia; Tasmania; New Zealand; South Africa)
Eisenia arborea Aresch. (
Vancouver Island, British Columbia, Montrey, Santa Catalina Island, California - America)
Egregia menziesii (Turn.)
Aresch.

Hedophyllum sessile (C.Ag.)
Setch (Alaska, California - America)
Macrocystis pyrifera (Linnaeus, C.Agardh) (Australia; Tasmania and South Africa)
Pleurophycus gardneri Setch. &
Saund. (
Alaska, California - America)
Pterygophora californica Rupr. (
Vancouver Island, British Columbia to Bahia del Ropsario, Baja California and California - America)
Non-Laminariales species that may be considered as kelp:
Durvillea antarctica, Fucales (New Zealand, South America, and Australia)
Durvillea willana, Fucales (New Zealand)
Durvillaea potatorum (Labillardière) Areschoug, Fucales (Tasmania; Australia)
Bull kelp, Nereocystis luetkeana, a northwestern American species. Used by coastal indigenous peoples to create fishing nets.
Giant kelp, Macrocystis pyrifera, the largest seaweed. Found in the Pacific coast of North America and South America.
Kombu, Saccharina japonica (formerly Laminaria japonica) and others, several edible species of kelp found in Japan.
Species of Laminaria in the British Isles;
Laminaria digitata (Hudson) J.V. Lamouroux (Oarweed; Tangle)
Laminaria hyperborea (Gunnerus) Foslie (Curvie)
Laminaria ochroleuca Bachelot de la Pylaie
Saccharina latissima (Linnaeus) J.V.Lamouroux (sea belt; sugar kelp; sugarwack)
Species of Laminaria worldwide, listing of species at AlgaeBase:
Laminaria agardhii (NE. America)
Laminaria bongardina Postels et Ruprecht (Bering Sea to California)
Laminaria cuneifolia (NE. America)
Laminaria dentigera Klellm. (California - America)
Laminaria digitata (NE. America)
Laminaria ephemera Setchell (Sitka, Alaska, to Monterey County, California - America)
Laminaria farlowii Setchell (Santa Cruz, California, to Baja California - America)
Laminaria groenlandica (NE. America)
Laminaria longicruris (NE. America)
Laminaria nigripes (NE. America)
Laminaria ontermedia (NE. America)
Laminaria pallida Greville ex J. Agardh (South Africa)
Laminaria platymeris (NE. America)
Laminaria saccharina (Linnaeus) Lamouroux, synonym of Saccharina latissima (north east Atlantic Ocean, Barents Sea south to Galicia - Spain)
Laminaria setchellii Silva (Aleutian Islands, Alaska to Baja California America)
Laminaria sinclairii (Harvey ex Hooker f. ex Harvey) Farlow, Anderson et Eaton (Hope Island, British Columbia to Los Angeles, California - America)
Laminaria solidungula (NE. America)
Laminaria stenophylla (NE. America)
Other species in the Laminariales that may be considered as kelp:
Alaria esculenta (North Atlantic)
Alaria marginata Post. & Rupr. (Alaska and California - America)
Costaria costata (C.Ag.) Saunders (Japan; Alaska, California - America)
Ecklonia brevipes J. Agardh  (Australia; New Zealand)
Ecklonia maxima (Osbeck) Papenfuss (South Africa)
Ecklonia radiata (C.Agardh) J. Agardh (Australia; Tasmania; New Zealand; South Africa)
Eisenia arborea Aresch. (Vancouver Island, British Columbia, Montrey, Santa Catalina Island, California - America)
Egregia menziesii (Turn.) Aresch.
Hedophyllum sessile (C.Ag.) Setch (Alaska, California - America)
Macrocystis pyrifera (Linnaeus, C.Agardh) (Australia; Tasmania and South Africa)
Pleurophycus gardneri Setch. & Saund. (Alaska, California - America)
Pterygophora californica Rupr. (Vancouver Island, British Columbia to Bahia del Ropsario, Baja California and California - America)
Non-Laminariales species that may be considered as kelp:
Durvillea antarctica, Fucales (New Zealand, South America, and Australia)
Durvillea willana, Fucales (New Zealand)
Durvillaea potatorum (Labillardière) Areschoug, Fucales (Tasmania; Australia)
Kelp