Daily Overviewさんのインスタグラム写真 - (Daily OverviewInstagram)「The beaches in Perth, Australia, are world-famous for their beautiful white sand and clear blue water. When seen from above, we can also discover the currents and swirls that are created here when the waves hit offshore reefs. While the patterns in the water may be beautiful, they also create powerful undertows that can be perilous for surfers and swimmers. - Created by @overview Source imagery: @nearmap」1月28日 1時56分