Seagrass beds are a threatened habitat especially in developing countries where extensive coastal developments of land reclamation for industry or tourism and aquaculture. Compared to coral reefs or mangroves the understanding and public awareness of seagrasses is limited (Orth et al., 2006). The decline of seagrass worldwide is very dramatic with an annual average loss of about 3,370 km2 at a rate of 27 km2 /year (Waycott et al., 2009). These data represent the situation in the USA, Europe and Australia, where law enforcement, conservation and public awareness are maintained better than in developing countries where we can assume there is greater loss in the other regions of the world.