Macroalgae, such as kelp, nori, and sea lettuce, naturally grow in coastal waters where they attach to rocks or other surfaces. Many microalgae species, including Nannochloropsis and Dunaliella, are also well-suited for saltwater cultivation and are commonly grown in aquaculture systems or for biofuel production.
Saltwater algae are often more resilient to contamination from freshwater species, giving them an advantage in certain farming systems. The salinity of the water must match the requirements of the chosen species because different algae tolerate different salt concentrations. Maintaining stable salinity levels helps support healthy growth and prevents stress, which can slow productivity or lead to culture collapse.
