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Water lettuce is a free floating aquatic plant in rosettes of green leaves, rosettes occuring singly or connected to others by short stolons whose origins are uncertain. It forms large, dense floating mats. The plant can adapt to life in ponds, dams, lakes and quiet areas of rivers and streams, but cannot withstand salt water. Still continue with observation whether it is to survive in winter.

An initial survey of the marine environment carried out in 2008 byDr.Posa Skelton and the Marine Conservation Section of the Division of Environment and Conservation, assessed selected sites for the presence of introduced species and the potential impacts on the marine environment. Surveys were conducted around the Apia harbour, Mulinuu and the Palolo Deep Marine Reserve- a total of eleven (11) sites. Findings from this initial assessment confirmed the presence of introduced species that were potentially invasive. This included two introduced seaweeds, Codiumarenicolaand Spatoglossummacroduntum that were observed distributed and well established across these sites.

Marine resources report prepared for the Samoa's National Report for the World Summit on Sustainable Development, Johannesburg, South Africa, July 2002.

This report records and presents an account of the Pilot Water Education Project for Samoa executed from the October 2003 to January 2004. Freshwater is not only a resource for human use but also provides important habitats for many native plant and animal species. Hence, water cannot be isolated but must be seen as one element in a broader ecosystem.