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Giant kelp is common along the coast of the northeastern Pacific Ocean, from Baja California north to southeast Alaska, and is also found in the southern oceans near South America, South Africa, Australia, and New Zealand. Individual algae may grow to more than 45 metres (150 feet) long at a rate of as much as 60 cm (2 ft) per day.
Rockfish swimming around giant kelp A diver in a kelp forest off the coast of California A kelp forest off of the coast of Anacapa Island, California Giant kelp uses gas-filled floats to keep the thallus suspended, allowing the kelp blades near the ocean surface to capture light for photosynthesis.
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)
Giant kelp marine forests are diverse, complex and highly productive components and foundation species of cold-water rocky marine coastlines around the world. Giant kelp marine forests in Australia are typically found in temperate south eastern waters on rocky reefs where conditions are cool and reasonably nutrient rich. [4]
Aquaculture of giant kelp, Macrocystis pyrifera, is the cultivation of kelp for uses such as food, dietary supplements or potash. [ 1 ] [ 2 ] Giant kelp contains iodine , potassium , other minerals vitamins and carbohydrates .
Kelp forests are also some of the world's largest carbon sinks, and the Great Southern Reef therefore acts as a buffer against climate change. [7] Unfortunately, an estimated 95% of the giant kelp forests off the coast of Tasmania have died off over the past few decades due higher water temperatures and the long-spined sea urchin. [6] [8]
The largest stramenopiles are giant kelp from the northwestern Pacific. The floating stem of Macrocystis pyrifera can grow to a height of over 45 m (148 ft). [40] [41] Macrocystis also qualifies as the largest brown alga, the largest chromist, and the largest protist generally.
Also known as kelp 8–30 m under water and cultivated for food. Macrocystis: Brown: Giant kelp forming floating canopies. Monostroma: Green: Porphyra: Red: Intertidal zones in temperate climate and cultivated for food. Sargassum: Brown: Pelagic especially in the Sargasso Sea.