Expansive ocean, algae is the most basic and most important producers. Seaweed can purify water, it is the main source of oxygen in the sea. Additionally, there are many biological symbiosis with algae and survival depends on it. In addition, it is also directly or indirectly the water source of food organisms.
2. The use of a lot of algae on humans, the easiest is probably the food, such as seaweed, hair vegetable, kelp, seaweed, asparagus dishes. Seaweed contains a variety of common human essential amino acids, proteins, carbohydrates, carotenoids, vitamins and minerals, and fat content is very low, at health food popular today, algae can be said to be an excellent health food.
3. In recent years, gradually algae were found to have fever, anti-inflammatory, anti-bacterial, anti-cancer, prevention of thrombosis and special physiological diuretic activity. They extract the algin also often used to treat ulcers, promote the formation of connective tissue, bleeding, lower blood pressure and cholesterol and other medical purposes. 4. Seaweed is an excellent livestock feed additives, can promote appetite, enhance disease resistance. For aquaculture, seaweed is also one of the important bait. Vegetables such as asparagus are important prey province abalone farming. Extracted from algae various alginate, such as agar, alginate, carrageenan, etc., using its special gel resistance, viscosity and emulsification properties, widely used in food processing, paper, textiles, brewing , cosmetics, paint, tooth mold, printing, photographic film, sewage purification, basic research with the media and so on. In addition, the energy, we can even make use of large-scale algae to produce hydrocarbons (such as methane
Distribution of a wide range of seaweed, from arctic to the tropics have their tracks, and more generally temperate seaweed species richness than other areas, algae 亦较 large, the province is located in the tropical and subtropical regions, compared to poor seaweed. The proportion of algae growth has its specific area, which is mainly contained in the pigment type and its related content. Because different pigments can also absorb light of different wavelengths, usually in dark areas or deep-sea part, phycoerythrin more able to effectively absorb blue and green, and so close to the deep part of the low-water line to the red algae majority; in the middle of the intertidal zone, mostly brown algae intertidal belt ministry mostly green algae, this phenomenon in the vertical distribution of the most obvious of the sea.