Molecular population genetics/genomics and phylogeography of marine algae, seagrasses, fish and assorted invertebrates with emphasis on:, 1) population-level processes that affect genetic and spatial structure, the genetic basis for adaptation (adaptive population divergence), and historical demography (statistical phylogeography), 2) hybrid zones and speciation in fucoid seaweeds, 3) invasion biology, 4) biodiversity and marine protected areas, especially with respect to seagrass ecosystems, genomics, population genetics, phylogeography, phylogenetics, ecology, conservation, invasions, biodiversity, algae (phytoplankton and seaweeds), seagrasses, marine invertebrates, flatfish, elasmobranchs