africa americas asia atlantic ocean auckland australia avalon peninsula bruny island canada canal carlisle central america chile continent corbridge crimea egypt finland geography gibraltar greece gulf of finland gulf of suez iceland india indian isthmus of catalina island isthmus of chignecto isthmus of corinth isthmus of panama isthmus of perekop isthmus of tehuantepec japan karelian isthmus lake ladoga lake mendota lake monona lake washington land bridge langlade island madison isthmus mainland malay peninsula mavis grind mediterranean sea mexico newfoundland and labrador north africa north america north auckland peninsula north island nova scotia pacific ocean panama canal peloponnese prince edward island puget sound red sea russia saint pierre and miquelon sark scotland seattle shetland south america spain sri lanka stanegate suez suez canal tasmania tombolo ukraine united kingdom washington westfjords