swap_horiz Alaria marginata Alternatives

1

Macrocystis pyrifera

Giant kelp (*Macrocystis pyrifera*) is the largest known seaweed on Earth, capable of growing 60 meters long and forming...

Commercial Pacific Giant Kelp Brown Algae

8.6 Great

2

Macrocystis integrifolia

Giant kelp forming subtidal forests along Pacific coasts of North and South America, one of the world's fastest-growing...

Pacific Kelp Brown Algae Phaeophyta

8.3 Great

3

Undaria peterseniana

A brown alga (Alariaceae) closely related to the commercially cultivated wakame (Undaria pinnatifida), native to the tem...

Korea Edible Kelp Brown Algae

8.2 Great

4

Nereocystis luetkeana

*Nereocystis luetkeana*, or bull kelp, is an annual brown macroalga prominent along the Pacific Northwest coast, recogni...

Canopy Pacific Brown Algae Phaeophyta

7.6 Good

5

Ecklonia cava

Brown kelp native to Japan and Korea, notable for high phlorotannin concentrations and extensive use in food, cosmetics,...

Japan Edible Kelp Brown Algae

7.4 Good

6

Hedophyllum sessile

A broad-bladed brown kelp (Laminariaceae) of the northeastern Pacific that entirely lacks a stipe, attaching its undivid...

Kelp Intertidal North Pacific Brown Algae

7.3 Good

7

Laminaria digitata

*Laminaria digitata*, or oarweed, is a large brown kelp found in the North Atlantic that is industrially harvested for a...

Kelp North Atlantic Brown Algae Phaeophyta

7.2 Good

8

Laminaria pallida

A large brown kelp (Laminariaceae) forming extensive subtidal forests along the cold upwelling coasts of South Africa an...

South Africa Kelp Subtidal Brown Algae

7.2 Good

9

Laminaria hyperborea

*Laminaria hyperborea* is a large brown macroalga that forms extensive kelp forests in the Northeast Atlantic and is hea...

Kelp North Atlantic Subtidal Brown Algae

7.0 Good

10

Ecklonia radiata

*Ecklonia radiata* is a dominant habitat-forming seaweed found in the temperate reefs of Australia and New Zealand, supp...

Australia Kelp Subtidal Brown Algae

7.0 Good

11

Costaria costata

A brown kelp (Costariaceae) of the North Pacific from Japan to California, immediately identifiable by five prominent pa...

Kelp North Pacific Ribbed Brown Algae

6.9 Fair

12

Pterygophora californica

Perennial kelp native to the Pacific coast of North America, among the longest-lived macroalgae known, with individual p...

Pacific Subtidal Brown Algae Phaeophyta

6.8 Fair

13

Ecklonia brevipes

A subtidal brown kelp (Lessoniaceae) endemic to New Zealand and parts of southern Australia, forming important underwate...

New Zealand Kelp Subtidal Brown Algae

6.5 Fair

14

Lessonia trabeculata

Subtidal kelp native to the southeastern Pacific coasts of Chile and Peru, commercially harvested as a major source of a...

South America Kelp Subtidal Brown Algae

6.4 Fair

15

Lessonia variegata

A large brown kelp (Lessoniaceae) endemic to New Zealand, forming extensive subtidal and low-intertidal forests that ser...

New Zealand Kelp Subtidal Brown Algae

6.4 Fair

16

Laminaria ochroleuca

Kelp with a pale yellowish stipe native to the northeastern Atlantic from Iberia to Norway, among the most commercially...

Kelp North Atlantic Subtidal Brown Algae

6.3 Fair

17

Eisenia arborea

Brown kelp native to the eastern Pacific from California to Baja California, forming subtidal forests that support diver...

Pacific Kelp Subtidal Brown Algae

6.2 Fair

18

Lessonia flavicans

Brown kelp (family Lessoniaceae) native to subantarctic regions including the Falkland Islands and southern South Americ...

Kelp Southern Ocean Subtidal Brown Algae

5.5 Mediocre

19

Alaria fistulosa

Large brown alga native to the North Pacific, particularly Alaskan waters, distinguished by a hollow (fistular) midrib a...

Kelp North Pacific Subtidal Brown Algae

5.4 Mediocre

20

Pleurophycus gardneri

Kelp native to the northeastern Pacific coast of North America, distinguished by a single broad blade with a prominent m...

Kelp North Pacific Subtidal Brown Algae

4.8 Poor