Keeping the sea and people healthy with seaweed

LLCSea Vegetablecollects and studies seaweed that is decreasing due to rock formations, brings it back to life through cultivation on land and in the sea, which has less environmental impact, and proposes new ways to eat seaweed.

More than 1,500 types of seaweed inhabit Japan's waters, almost all of which are non-toxic and edible. However, even in Japan, which is said to have the most advanced seaweed eating culture in the world, only a few dozen types of seaweed are currently on the table. More than 1,400 types of seaweed exist as unknown ingredients.

Plants on land have been thoroughly explored, and various cultivation techniques and cooking methods have been established, but the world of seaweed is still in its infancy, or has not even begun. We want to protect the seaweed food culture that has been passed down from the past, and at the same time create a new seaweed food culture. We work every day with the belief that a future that is good for the ocean and people lies ahead.

organizational structure

co-representative

Jun Hachiya (photo right)

Born in Okayama Prefecture. During his university days, he came up with a business plan for ``combined aquaculture of abalone and seaweed using deep ocean water,'' and conducted research to commercialize this plan. After that, we established a limited liability company with co-representative Tomohiro to specialize in the production of seaweed.Sea VegetableFounded. In order to enrich the ocean by regenerating seaweed that is decreasing in various parts of Japan, we are repeatedly taking on new challenges, mainly with our research and production members, from cultivating seaweed seeds to establishing cultivation methods on land and at sea.

Yuichi Tomohiro (left photo)

Born in Osaka. After graduating from university, I went on a trip to visit farming, mountain and fishing villages across the country to learn about the current situation in Japan's regions. After the Great East Japan Earthquake, she worked with women from fishing families on the Oshika Peninsula in Ishinomaki City, Miyagi Prefecture to launch businesses such as bento shops and accessory brands, as well as a market in Tokyo's Sumida Ward that connects people who eat and make products. Afterwards, with co-representative HachiyaSea VegetableFounded. We work to create a new seaweed eating culture while connecting people and organizations.

Co-representative photo
japan map

Areas we are working on

Sea Vegetableis cultivating seaweed on land and in the sea at more than 30 locations nationwide. (Including test stage)

Kochi, Mie, Ehime, Kumamoto, Akita, Shizuoka, Kumamoto, Yamaguchi, Hokkaido, Okinawa, etc.

ともにつくる人たち

シーベジタブルの活動は、料理人、研究者、企業、地域の方々など、
多様な関わりによって広がっています。

村田吉弘

村田吉弘

料理人

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生江史伸

生江史伸

料理人

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岡田大介

岡田大介

海藻料理研究家

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田代健斗

田代健斗

サラダ王子

長谷川徹

長谷川徹

野村不動産株式会社

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若狭美穂

若狭美穂

野村不動産株式会社

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土肥幸

土肥幸

メルヘン

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Collaborating companies

Sea VegetableIn order to expand the possibilities of seaweed and maintain the health of the marine ecosystem,
We are building partnerships with a wide variety of companies and organizations.

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History

2016
LLC in Kochi PrefectureSea VegetableEstablishment
Succeeded in the world's first land cultivation of green seaweed using underground seawater
2020
Developing onshore production bases across the country, including Kumamoto, Mie, and Ehime prefectures
Started research and production tests on seaweed cultivation on the sea surface.
Shogo Arai, director of the Seaweed Research Institute, joins
Opened an online store and started selling retail products
Obtained patents related to production equipment developed in-house, and subsequently obtained multiple patents.
2021
chef'sShui Ishizakahas joined the “SEA VEGETABLE Test” in Tokyo. Opened “Kitchen”
Daisuke Okada, who was a sushi chef at Sushiya, a referral-only sushi restaurant at the time, joined as a partner chef/seaweed cuisine expert.
2023
Isetan Shinjuku store〈Salon du chocolat> opened for the first time with seaweed x cacao dessert (will also open in 2024)
2024
“EAT & MEET SEA” at Isetan Shinjuku store and Nihonbashi Mitsukoshi main store VEGETABLE” will be held.
The world's first successful mass production of black seaweed (over 100 kg dry weight) on land.
Signed a joint demonstration agreement with Panasonic HD to explore the possibility of solving social issues through seaweed farming
2025
``SEA'' creates a sustainable seaweed industry together by collaborating with companies across industries. VEGETABLE Co Creation Project launched
A new sweets experience born from the sea "umika” series started
Succeeded in mass production of black seaweed by land cultivation (dry weight over 300kg)

2026
in the Yaesu/Nihonbashi area of Tokyo.Sea Vegesstand” and “SEAVEGE- Kitchen Lab” open

Awards/selection history

2024
According to the Ministry of Economy, Trade and Industry,J-Startup WESTSelected as
ICC FUKUOKA 2024 “Food & Drink Award”won the Grand Prix, and won awards in other categories as well.
Osaka/Kansai Expo Signature Pavilion "EARTH MART”, EARTH FOODS As a chef who cooks 25Shui Ishizakaselected by

2025
Sponsored by Belgium's We're SmartFuture Awards 2025Aonori soy sauce won the Innovation of the Year Award
Forbes JAPAN × EARTH MART25 people who will brighten the future of food” toSea VegetableSelected by co-representatives of
Sponsored by WIRED JAPAN and supported by Sekisui House,WIRED Innovation Award 2025” Selected as
Episode 20Nippon New Business Creation AwardReceived the highest award, the Small and Medium Enterprise Agency Commissioner's Award and the Japan New Business Council Chairman's Award.
FY2025NIKKEI Blue Ocean Grand PrizeReceived the Special Jury Award at

Media coverage

Company name: LLCSea Vegetable

Founding year: 2016

Co-representative: Jun Hachiya, Yuichi Tomohiro

Counselor: Ryutaro Yamamoto

Advisor tax accountant: Hajime Mukaiya

Business details: Seaweed research, production, processing, sales, eating and drinking, etc.

Head office location: 688-9 Anauchi Otsu, Aki City, Kochi Prefecture

Areas where we are working on land: Kochi, Mie, Ehime, Kumamoto, Iwate, etc.

Areas where we are working on sea level issues: Hokkaido, Akita, Shizuoka, Mie, Ehime, Yamaguchi, Kumamoto, etc.

SEAVEGE- Kitchen Lab: Tokyo

*Patent acquired for production equipment developed in-house