Bull Kelp

Giant Bull Kelp

Scientific name: Nereocystis leutkeana

Author:  Antonia Kropp


Life History/ Interesting Facts:

Bull Kelp is a major species of kelp and the largest brown algae. It is a fast growing seaweed that can grow up to 2ft in one day and reaches a total size up to 36m (118ft). Bull Kelp is a vital component of the coastal ecosystem and comparable to a forest on land. It is food and habit for many animals and other seaweeds. It has a large bulb filled with carbon monoxide gas at the end of a long, robust and flexible tail (called stipe), that keeps the kelp floating on the surface to get the sunlight it needs for photosynthesis. Most of the kelp dies in winter because of the stormy and rough weather and washes up on beaches where it serves as food and shelter for the animals on sandy shorelines.

Habitat:

Bull Kelp grows in kelp forests along the rocky coastline and in intertidal zone but not far off the coast it may be found in waters up to 20m (65ft) deep. It is common from northern Alaska to southern California (in colder water). As a result of its location near the coastline it can warn boaters of shallow reefs or the coast.

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