Sea Day or Ocean Day was originally on July 20th in Japan. It is now held on the third Monday of July because of the “Happy Monday” reforms that created three day weekends from some of the public holidays in Japan. This year it is July 18th.
World Oceans Day is June 8th. From this year, the Southern Ocean surrounding Antarctica will be recognized as the world’s fifth ocean. Scientists have known that the Southern Ocean has different characteristics from the other oceans. Now there is an international official agreement to acknowledge the Southern ocean.