Seaweed or sea vegetables are forms of algae that grow in the sea. They're a food source for ocean life and range in color from red to green to brown to black. Seaweed grows along rocky shorelines around the world, but it's most commonly eaten in Asian countries such as Japan, Korea and China.

Where does seaweed grow?

"Seaweed" is the common name for countless species of marine plants and algae that grow in the ocean as well as in rivers, lakes, and other water bodies. Kelp forest in the Channel Islands National Marine Sanctuary and National Park.

Why is there so much seaweed on the beach?

Warmer, overnutrified waters

Data gathered over the past decade has revealed the likely causes of these seaweed invasions: Saharan dust clouds, warming temperatures and the growing human nitrogen footprint. Just as nutrients feed red tide blooms, they feed sargassum, which thrives in warmer water.