Giant Kelp

strands of giant kelp underwater with fish in foreground
Giant Kelp. NPS.

Quick Facts
Height: 160 ft. or more

Blade Length: 10–14 in.

Did You Know?
Kelp is actually not a plant; it is an algae. There are more than 20 species of kelp found in the waters around California, but giant kelp is the species that grows the fastest. It can grow by as much as two feet each day!

Learn More

Kelp Forests

Last updated: November 9, 2018