top of page

Marine Day in Japan: Celebrating the Ocean's Bounty and Beauty

Japanese Marine Day

Marine Day, (海の日,Umi no Hi), is a national holiday in Japan that honours the vital role of the ocean in the country's culture, economy, and daily life. Observed on the third Monday of July, this special day is dedicated to expressing gratitude for the blessings of the sea and to hoping for the prosperity of Japan as an island nation surrounded by water. The holiday's significance is multifaceted, encompassing historical, cultural, and environmental dimensions.

Marine Day in Japanese

Historical Roots

Marine day was known as Marine Memorial Day (海の記念日, umi no kinen bi) until 1996. The day was established by Communications Minister Shozo Murata in 1941 to commemorate the Meiji Emperor and his 1876 voyage in the Meiji Maru, a ship that was constructed in Scotland. 

Marine Day  Historical roots

Marine Memorial Day first became a public holiday in 1995 and its date was designated as the third Monday of July in 2003. An exception to the date was made in 2020 due to the Olympics which were ultimately postponed because of the Covid-19 pandemic. The postponement resulted in the date of Marine Day also being moved in 2021 when the Olympics finally took place.


Cultural Significance

As an island country, Japan’s relationship with the ocean is deeply ingrained in the country’s culture and traditions. The sea has always been a source of sustenance, providing a rich variety of seafood that forms the backbone of Japanese cuisine. The sea also plays a crucial role in traditional festivals and rituals, such as the Shinto ceremonies that honour sea deities and include prayers for safe voyages and abundant catches.

Marine Day cultural significance

Marine Day serves as a reminder of these cultural ties, encouraging Japanese people to reflect on the ocean’s contributions to their lives during the summer season. It's a day for Japanese citizens to reconnect with the sea, whether through recreational activities like swimming and beach outings, or by participating in community events that promote maritime heritage and education.



Environmental Awareness

Festivals aside, Marine Day has also become a platform for raising awareness of marine conservation and environmental issues. The health of the oceans is a growing concern globally, with challenges such as pollution, overfishing, and climate change threatening marine ecosystems. On Marine Day, various events and campaigns are organized in Japan to educate the public about the importance of protecting marine environments.

Marine Day Environment

Beach cleanup events, educational programs in schools, and initiatives to reduce plastic waste are some of the ways people engage in environmental stewardship in the summer months. These efforts highlight the need for sustainable practices to ensure that the oceans remain viable resources for future generations.


Marine day in Japan : Celebrations and Activities

Marine Day is marked by a variety of celebrations and special water-related events across Japan. Coastal cities and towns often host maritime festivals featuring boat races, fireworks, water sports competitions, and parades. Museums and National aquariums organise special events and exhibits and interactive programs that allow visitors to learn more about marine life and maritime history.

Marine Day Celebrations

Many families take advantage of the holiday to spend time by the sea, enjoying beach trips, water sports, and picnics. The long weekend provides an excellent opportunity for travel and leisure, contributing to domestic tourism and local economies.


Marine Day is more than just a holiday marked on the Japanese calendar; it is a celebration of Japan’s deep connection to the ocean. It underscores the importance of the sea in Japanese life, from the sustenance it provides to its role in the nation’s cultural and historical identity. As an occasion for both celebration and reflection, Marine Day encourages a greater appreciation for the ocean’s gifts and a collective commitment to preserving its health and vitality for the future.


Banner Marine Day


bottom of page