Geography Geographic Overview of The Japanese Archipelago Maritime Geography An island countryPosition & Extreme pointsTerritory & Population Islands The 5 main islands of JapanTwo extended archipelagosMain regions of Japan Currents Warm Water currentsCold Water currentsThe Kuroshio-Oyashio system Seas Japanese seas & oceansStraits & inletsMajor lakes Climate & Seasons OverviewRainy seasons & cyclonic stormsThe four Japanese seasons Biodiversity A marine biodiversity hotspota dynamic systemcoral