Kelp
Kelps are large brown algae seaweeds that make up the order Laminariales. There are about 30 different genera.
Kelp forest
Kelps are primarily associated with temperate and arctic waters worldwide. Of the more dominant genera, "Laminaria" is mainly associated with both sides of the Atlantic Ocean and the coasts of China and Japan; "Ecklonia" is found in Australia, New Zealand, and South Africa; and "Macrocystis" occurs throughout the northeastern and southeastern Pacific Ocean, Southern Ocean archipelagos, and in patches around Australia, New Zealand, and South Africa. The region with the greatest diversity of kelps (>20 species) is the northeastern Pacific, from north of San Francisco, California, to the Aleutian Islands, Alaska.