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 The form and size of algae is highly variable. The size ranges from the microscopic
unicellular forms to large forms. A few of the marine forms such as kelps, form massive
plant bodies.

 The algae reproduce by vegetative, asexual and sexual methods.
 The potential uses of algal biomass for the benefit of mankind have been intensively

reviewed in the last few years.

Types of algae

Blue green algae (including spirulina).
Red algae
Brown algae
Advantages of algae

• It contains high amounts of simple and complex carbohydrates which provide the body
with a source of energy. In particular, the sulfated complex carbohydrates are thought
to enhance the immune system's regulatory response.

• It contains an extensive fatty acid profile, including Omega 3 and Omega 6. These
essential fatty acids also play a key role in the production of energy.

• It has an abundance of vitamins, minerals, and trace elements.
• Microalgae may serve as a continuous and reliable source of antioxidants, because they

can be cultivated on a large scale. Furthermore, the qualities of the microalgal cells can
be controlled, so that they contain no herbicides and pesticides, or any other toxic
substance.
• Algae grow fast in the sea.
• Algae do not compete with agriculture.
• Purify water waste.

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