Ulva rigida

Ulva rigida . It is a colonizing species of green algae . Due to its greenish plastic sheet appearance it is not usually confused with another species. It has the ability to capture the conditions of water contamination, so it is used as an indicator of environmental alteration. It is an edible seaweed that is used as food especially in Japanese cuisine and in countries of the Eurasian region; It is rich in protein, soluble dietary fiber and a wide variety of vitamins and minerals, especially iron . [one]


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  • 1 Distribution
    • 1 Habitat
  • 2 Appearance
  • 3 Reproduction
  • 4 Reference
  • 5 Sources


Widely distributed throughout the Mediterranean and the Atlantic .


It lives on rocky bottoms, from the surface to a depth of 10m, therefore, in mediolitoral and upper infraralitoral areas. Live in places with a lot of organic matter, beaten places, even contaminated. It is found throughout the year with a maximum between winter and spring , it is an opportunistic species. It can sometimes be found together with species of the genus Cladophora .


Bright green algae, called lettuce of sea for its resemblance to the terrestrial plant. It has a thick and cartilaginous base, forms wide sheets that meet in a small fixing disc. It measures 5 to 35cm in height.


Through asexual reproduction by fission, fragmentation or zoospores, and sexually by gametes , which can photosynthesize. Hence its ability to spread and colonize, even before it fully developed.


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