How big is the Giant Kelp?

Giant Kelp (Macrocystis pyrifera) reaches 1000–3000 cm in length.

At what depth can you find the Giant Kelp?

Giant Kelp is found between 0–30 m deep.

What is the conservation status of the Giant Kelp?

IUCN status: Least concern (LC).

Where can you find the Giant Kelp?

Found in: Eastern Pacific, Mediterranean.

Giant Kelp (Macrocystis pyrifera)

Key facts

Scientific name: Macrocystis pyrifera
Common name: Giant Kelp
Category: Algae
Family: Laminariaceae
Genus: Macrocystis
Size: 1000–3000 cm
Depth: 0–30 m
IUCN status: Least concern (LC)
Danger level: Harmless
Habitats: kelp-forest
Behaviours: benthic
Ocean zones: Eastern Pacific, Mediterranean

Description

Macrocystis pyrifera is the world's largest alga, reaching 30 m long. Brown alga (Phaeophyceae) of temperate East Pacific and southern coasts. Floating body with pneumatocysts, anchored by strong holdfasts. Forms dense underwater forests, similar to terrestrial forests. Critical habitat for sea urchins, fish, sea lions. Commercially harvested for alginic acid. Least threatened = LC. Iconic for California divers.

Photo of Giant Kelp

Frequently asked questions

How big is the Giant Kelp?: Giant Kelp (Macrocystis pyrifera) reaches 1000–3000 cm in length.
At what depth can you find the Giant Kelp?: Giant Kelp is found between 0–30 m deep.
Is the Giant Kelp dangerous to divers?: Danger level: Harmless.
What is the conservation status of the Giant Kelp?: IUCN status: Least concern (LC).
Where can you find the Giant Kelp?: Found in: Eastern Pacific, Mediterranean.

Other species in the family Laminariaceae

Sources

Taxonomy: WoRMS (AphiaID 232231)
Photos: iNaturalist (CC BY-NC)
Distribution: GBIF (taxonKey 5422328)
Conservation: IUCN Red List
Encyclopedia: Wikipedia