larry mayer unh oceanography university of new hampshire dr. larry mayer ocean exploration center for coastal & ocean mapping joint hydrographic center law of the sea ocean floor mapping underwater mapping enigmatic low-backscatter chesapeake drift biomass maine fishing benthic communities gillnets otter trawls infauna new frontiers in ocean exploration e/v nautilus operations sea floor mapping mediterranean sea ocean mapping ocean science drlarrymayer larrymayerunh research water framework directive landscape mosaics sample size subtidal macroalgae cfr index seafloor mapping deep ocean floor unh seamount johnson atoll pacific ocean unclos healy ecs arctic
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