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Publisher Summary This chapter explores whether seagrass populations have the characteristics that make a metapopulation approach a useful one for investigation. Measures for the protection of seagrass populations must consider local and metapopulation dynamics, given that local recruitment was often influenced by the regional abundance of seagrasses and dispersal patterns. It is highly probable that the possibility of metapopulation structure operating in seagrass will, in fact, vary among species and even within species from different locations, given the wide variety of biological and ecological characteristics outlined in the chapter. As the next step, it will be necessary for seagrass studies to adopt a regional or landscape perspective of patch colonization, extinction, and dispersal, setting the stage for more detailed assessment of metapopulation biology and a more detailed understanding of the persistence of seagrass populations on the local scale. Collection of more detailed demographic information on seagrasses and improved descriptions of seagrass spatial structure are required to evaluate better whether a regional view of the local persistence of seagrasses is appropriate and informative.