Learn and explore: Teacher's guide FrontpageLearn and exploreTeacher’s guide All materials from the Itameri.fi website quickly and easily available for use Osion sisältö Geography Bioloby Environmental education Lue seuraavaksiBiology Characteristics of the Baltic SeaGeographyOrigin of the Baltic SeaGeologyHydrographyAdaptation of organismsThe Unique Baltic Sea EcologyImportant species of the coastInvasive species or alien species?Food webImportant habitats Human impact on the Baltic SeaEutrophicationHarmful substancesLitterAct for the good of the Baltic SeaAt homeShoppingOn the move OutdoorsAt the cottage and by the shoreIn nature and while boatingIn society Teacher's guideGeographyBiolobyEnvironmental education ResearchYear of a Marine Scientist