Ocean currents which surround Japan islands (1. Kuroshio 2.Kuroshio-Zokuryu 3.Kuroshio-Hanryu 4.Tsushima-Danryu 5.Tsugaru-Danryu 6.Sohya-Danryu 7.Oyashio 8.Liman-Kanryu)
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<span class="int-own-work" lang="en">Own work</span> (<span lang="en" dir="ltr">Original text: <i><bdi lang="">Own work by uploader (ref:道田豊他著　『海のなんでも小事典』　講談社ブルーバックス　2008年3月20日第1刷発行　<a href="//commons.wikimedia.org/wiki/Special:BookSources/9784062575935" title="Special:BookSources/9784062575935">ISBN 9784062575935</a>)</bdi></i></span>)