Algae are a large group of eukaryotic organisms, unicellular or multicellular, autotrophic and with a lack of the distinct tissue types of common land plants. Seeweeds are the largest and most complex type of algae. They may belong three different groups of multicellular algae: green, brown and red algae. As regards habitat, there are both marine and freshwater algae, but most of the latter are toxic, whereas most Edible Seaweed is included among marine algae.

Algae may reproduce in many different ways, according to the species: from the simple asexual cell division to the much more complex sexual reproduction.

Even thoug Seaweeds sometimes may resemble non-arboreal terrestrial plants, usually algae lack land plants’ characteristical structures, like roots, stomata, and so on, due to the fact that they live under water.

Algae have many different uses, in several fields, from medical to food. For instance, agar-agar is a largely used natural gelatin counterpart. Here in Italy, Edible Seaweed is mainly used to make fritters, whilst in Asia it is a traditional source of food. Anyway, it is today used in many coastal cuisines around the world.

It has a high content of vitamins (A, B group, C) and are rich in many minerals, like iodine and potassium.