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Phylum Chlorophyta: green algaePhylum Chlorophyta: green algae
Chlorphylls are the main Chlorphylls are the main photopigmentsphotopigments
Phylum Rhodophyta: red algaePhylum Rhodophyta: red algae
Contain phycobilins: accessory photopigments capable of absorbing blue and green light
Phylum Phaeophyta: brown algaePhylum Phaeophyta: brown algae
Contain fucoxanthins, accessory photopigments capable of absorbing blue and green light
Parts of the kelp thallusParts of the kelp thallus
HoldfastHoldfast StipeStipe PneumatocystPneumatocyst BladeBlade
Requirements of kelpRequirements of kelp
Cold water (<62Cold water (<62ºC)ºC) Nutrient-rich Nutrient-rich LightLight Rocky substrateRocky substrate
Giant kelpfish; kelp bass; Giant kelpfish; kelp bass; kelp rockfishkelp rockfish
Photo: Monterey Bay Aquarium
Photo: Luke Miller