EntityQ579649· pop 33· linked from 743 articlesphotic zoneSign in to saveuppermost layer of water in a lake or ocean that is exposed to sunlight more than 1% of surface illuminationConnectionsEkman transportEntitybiomeEntityDiatomeaEntityaquatic plantEntityeutrophicationEntitypelagic zoneEntityseabedEntityabyssal zoneEntitybenthic zoneEntitymarine ecosystemEntityneustonEntitymicrofossilEntitypelagic fishEntityunderwater acousticsEntityshallow water equationsEntityMarine microorganismEntityriverEntityPacific OceanEntityoceanEntitytsunamiEntityCategoriesAquatic ecologyOceanographical terminology