日本の高知にある、青い太平洋に囲まれた室戸岬。

大地誕生の最前線、室戸で

室戸海洋深層水

日本・高知県室戸の天然海洋ミネラルと電解質

取水海域は
高知県室戸岬沖、
取水深度は約320～374mです。

高知県の拡大図と室戸岬の位置を示す、日本の地図。

室戸ならではの条件

  • 希少な沿岸湧昇環境
  • 清浄で安定した深層環境
  • 天然ミネラル・
    微量元素
  • 自然由来の
    電解質組成
  • 室戸ユネスコ
    世界ジオパークに関連する産地
取水管と、沿岸に向かって上昇する深海の海流を示す断面図。

表層水変動が大きい

海洋深層水安定し、栄養塩が豊富

海面のうち、わずか約 0.1%

が沿岸湧昇域に当たります。

イノベーションの歩み

  1. 1985

    室戸地域が海洋深層水利用研究のモデル地域に指定。

    室戸岬と岩の多い海岸線の空撮。

  2. 1989

    高知県に日本初の陸上海洋深層水取水施設が設置。

    高知の海を望む、陸上の海洋深層水取水施設。

  3. 1996

    室戸海洋深層水を活用した製品が発売。

    曲線を描く青い屋根のある、室戸海洋深層水の施設。

自然が生み出す希少性が、産地ならではの価値につながります。

沿岸の取水管が海中へ下り、海底の上方にある海洋深層水を採取しています。

海洋深層水について

深さが重要な理由

一般に海洋深層水とは、太陽光が十分に届きにくい水深200m以深の海水を指します。低温で比較的安定し、短期的な表層環境の変化の影響を受けにくいことが特徴です。

0m海面
0～200m表層水
太陽光が届く領域です。
天候、潮の満ち引き、海面の状況の影響を受けます。
水温躍層約100～200m
深さとともに水温が急激に変化する移行層。
200m以深深層水
太陽光がほとんど届きません。低温で安定しており、短期的な海面付近の変動の影響を受けにくい環境です。
320～374m室戸の取水深度
この水深の範囲から、取水管を通して海水を採取します。
海底
約1,000m

海洋深層水と表層水の比較

海洋深層水 （200 m以深）特性表層水 （0–200 m）
太陽光が十分に届きにくい太陽光の
影響		太陽光が届きます。
昼夜や季節の変化の影響を受けます。
年間を通じて低温で比較的安定水温の
安定性		季節・天候で変動
海面付近に由来する汚染物質のリスクが低い。汚染の
リスク		流出水、雨水、表層汚染の影響を受けやすい
比較的安定・均一ミネラルの
安定性		天候、河川、生物活動の影響を受け得る

深さが独自の条件を生み、安定性が応用価値につながります。

200 m以深の海洋深層水は、幅広い有益な用途に活用されています。

Deep Sea Water Benefits

Natural minerals and trace elements

Deep sea water contains a rich spectrum of naturally occurring minerals and trace elements.

These ocean electrolytes are formed over thousands of years through natural processes and remain in balance in the deep ocean, far from surface pollution.

The value lies in nature’s balance. Unchanged. Unprocessed. Naturally balanced.

1 liter of seawater (simplified)

Water (H₂O)96.5%(965 g)
Minerals3.5%(35 g)

Mineral distribution (approx.)

Chloride (Cl⁻)55.0%(19.3 g)
Sodium (Na⁺)30.6%(10.7 g)
Magnesium (Mg²⁺)3.7%(1.3 g)
Sulfate (SO₄²⁻)7.7%(2.7 g)
Calcium (Ca²⁺)1.2%(0.42 g)
Potassium (K⁺)1.1%(0.39 g)
Other constituents 0.7%(0.25 g)

Naturally occurring ocean electrolytes

  • Magnesium

    Supports natural mineral balance

  • Calcium

    Found in stable, natural ratios

  • Potassium

    Essential ocean electrolyte

  • Sodium

    Primary electrolyte in seawater

  • Chloride

    Most abundant anion

  • Sulfate / Bicarbonate

    Important oxygen-carrying anion in seawater

Trace minerals & elements

Deep sea water contains a wide spectrum of naturally occurring trace components. These are present in tiny amounts but reflect the ocean’s rich mineral environment.

  • BBoronNaturally occurring trace element
  • ZnZincNaturally occurring trace element
  • IIodineNaturally occurring trace element
  • CuCopperNaturally occurring trace element
  • MnManganeseNaturally occurring trace element
  • FeIronNaturally occurring trace element
  • SeSeleniumNaturally occurring trace element
  • SiSilicaNaturally occurring trace component

Many more trace elements are present in naturally occurring, ultra-low concentrations.

Naturally balanced by the ocean

Formed Over Time

Minerals and trace elements are dissolved through natural oceanic processes over thousands of years.

Stable & Consistent

Deep ocean conditions help maintain a consistent and stable mineral profile.

Unchanged by Humans

Collected from below the surface, far from surface pollution and seasonal variability.

Pure. Natural. Naturally balanced.

The ocean provides. We preserve.

Nature’s Electrolytes

Naturally occurring ocean electrolytes from Muroto Deep Sea Water.

Muroto Deep Sea Water contains naturally balanced electrolytes and trace minerals—delivered by nature, perfected by depth.

Naturally balanced for optimal hydration

Deep sea minerals occur in ideal proportions, supporting your body’s natural hydration and electrolyte balance.

Natural electrolyte balance

  • NaSodium
  • KPotassium
  • MgMagnesium
  • CaCalcium
  • ClChloride

Naturally occurring in deep sea water

Supports hydration

Helps maintain fluid balance

Supports normal muscle and nerve function

Supports post-exercise recovery

Supports overall well-being

Deep for a reason.

Pristine. Pure. Protected. Naturally rich in what your body needs.

Science & Research

Research-supported benefits of deep-sea water minerals

A growing body of scientific studies highlights the potential of deep-sea water minerals in supporting hydration, metabolism, mineral balance, and skin health.

1. Hydration & exercise recovery

  • Human clinical trial (n=20)
  • Deep-sea water (340 m)
  • 8 weeks
  • Compared with placebo (mineral-matched water)
Changes in urine osmolality
Deep-sea waterPlacebo
Urine osmolality (mOsm/kg)
1,0008006004002000
02468
Weeks

Figure. Urine osmolality during 8-week intervention. * p < 0.05 vs. placebo (Nutrients, 2022).

2. Metabolism & body composition

  • Human clinical trial (n=36)
  • Deep-sea water (340 m)
  • 12 weeks
  • Compared with placebo (mineral-matched water)
Change in body fat percentage (12 weeks)
Change (%)
20−2−4−6−8−10
Deep-sea water

Values are mean ± SD. * p < 0.05 vs. placebo (Marintec USA, 2020).

3. Mineral-related physiological support

  • Deep-sea water is naturally rich in magnesium, potassium, calcium and other minerals
  • Reported in scientific studies to support electrolyte balance and neuromuscular function
Average mineral composition of deep-sea water (concentration in mg/L)
Mineralmg/LMineralmg/L
Magnesium (Mg)1,280Chloride (Cl)19,000
Potassium (K)420Sulfate (SO4)2,600
Calcium (Ca)380Bromide (Br)65
Sodium (Na)320Boron (B)4.5

Reported in: Oceanographic & Biogeochemical Studies, 2019

4. Skin-related research

  • Human clinical trial (n=24)
  • Deep-sea water (340 m)
  • 8 weeks
  • Evaluated skin hydration and elasticity
Change in skin hydration (corneometer value) over 8 weeks
Deep-sea waterPlacebo
Change from baseline (%)
403020100
02468
Weeks

Mean ± SEM. * p < 0.05 vs. placebo (Cosmetics, 2020).

Quality. Purity. Evidence. Backed by science, inspired by the ocean.

Ongoing research continues to explore the potential of deep-sea water in supporting human health and everyday wellness.

Applications

Beverages and sports hydration

Muroto Deep Sea Water and concentrated mineral material deliver naturally balanced electrolytes for great-tasting, science-backed hydration.

Still & Sparkling Water

Pure taste. Naturally balanced.

  • Naturally occurring electrolytes for clean, smooth taste
  • Supports daily hydration and mineral balance
  • Ideal for premium still and sparkling water formulations

Sports Hydration

Replenish. Perform. Recover.

  • Natural electrolytes to replace what’s lost in sweat
  • Helps support fluid balance and endurance
  • Perfect for active lifestyles and on-the-go hydration

Functional Beverages

Hydration with purpose.

  • Naturally occurring minerals support everyday wellness
  • Clean-label ingredient for electrolyte, mineral and pH balance
  • Ideal for wellness shots, botanicals, and fortified drinks

Ready-to-Drink Concepts

Clean ingredients. Premium positioning.

  • Leverage the purity of Japanese deep sea water for elevated RTD beverages
  • Supports hydration, mineral balance and active living
  • Crafted for taste, clarity and consumer trust

From Ocean to Beverage

A clean, controlled process from source to solution.

  1. 1

    Collection

    Muroto Deep Sea Water

  2. 2

    Filtration

    Remove impurities

  3. 3

    Concentration / Mineral Adjustment

    Preserve beneficial minerals

  4. 4

    Formulation

    Tailored for performance & taste

  5. 5

    Final Beverage

    Premium hydration, ready to enjoy

From the deep sea of Japan to beverages that support everyday hydration and peak performance.

Natural electrolytes. Clean origin. Proven benefits.

Cosmetics & Personal Care

Mineral-rich water phase for skincare formulation

Muroto Deep Sea Water is used as a mineral-rich water phase in skincare and personal care products. It helps deliver a fresh, hydrating skin feel and supports everyday formulations.

Japan Shikoku Kochi Prefecture Cape Muroto
  • Mineral-rich water phase
  • Fresh, hydrating feel
  • Supports skin comfort
  • Suitable for skincare formulations
  • Studied in skin-related applications

Applications

Facial mist
Toner
Lotion
Serum
Sheet mask
Soothing care

Supported by Research

  • Skin Hydration

    Studied for moisture support

  • Melanin-Related Research

    Studied in whitening-related applications

  • Fibroblast / Collagen

    Studied for skin-firmness support

  • Anti-Elastase Activity

    Studied for elasticity-related care

  • Atopic-Dermatitis Support

    Studied in skin-comfort applications

Research topics are based on supplied source materials.

Food, Supplements & Wellness

Muroto Deep Sea Water and concentrated deep sea water ingredients provide naturally occurring minerals and trace elements to support a wide range of food, supplement, and wellness applications.

Mineral fortification

  • Beverages
  • Dairy alternatives
  • Plant-based foods
  • Baked goods

Supplement concepts

  • Mineral capsules & tablets
  • Electrolyte blends
  • Powder sticks
  • Sports nutrition

Wellness formulations

  • Beauty from within
  • Hydration support
  • Relaxation & recovery
  • Daily balance

Functional food opportunities

  • Broths & soups
  • Seasonings & sauces
  • Nutrition bars
  • Meal replacement

Ingredient versatility

  • Liquid deep sea water
  • Concentrated minerals
  • Powders & crystals
  • Custom solutions

Why Brands Use It

  • Natural story

    From 320–374 m deep off Cape Muroto, Kochi, Japan.

  • Premium Japanese origin

    Sourced from one of Japan’s most pristine coastal regions.

  • Mineral functionality

    Rich in naturally occurring minerals and trace elements.

  • Clean blue-ocean image

    Purity and sustainability aligned with today’s wellness values.

  • Product differentiation

    Elevate formulations with a unique, natural and science-backed advantage.

Nature FilteredScience Proven

Takeda Beverage

Our Japanese Principal

Deep Sea Water

Nature’s Purity. Science’s Value.

Deep Sea Water is seawater intaken from great depth, naturally filtered over centuries, preserving essential minerals in their purest form.

  • Pure & Clean

    Naturally filtered at great depth

  • Rich in Minerals

    Over 60+ trace minerals

  • Magnesium Rich

    Mg²⁺ > Ca²⁺ balance

  • Consistent Quality

    Stable composition all year round

  • Sustainable Resource

    Utilizing ocean sustainably

Sourced from the Deep

We draw water from deep beneath the ocean surface, far from sunlight and surface pollution, ensuring exceptional purity.

Sea Surface
Surface Water
Intake Pipe
Water Depth 200 m
Intake Port
Water Depth 320–374 m
Deep Sea Water
Water Depth 1000 m

Areas where upwelling occurs account for only0.1%of the world’s oceans.

Naturally Balanced

Deep Sea Water contains a balanced profile of minerals and trace elements essential to life and well-being.

  • KPotassium
  • CaCalcium
  • NaSodium
  • MgMagnesium
  • ZnZinc
  • FeIron
  • SeSelenium
  • 60+Trace Elements
  • 60+Manganese

Benefits of Deep Sea Water

  • Supports Hydration & Electrolyte Balance
  • Supports Recovery & Performance
  • Provides Essential Minerals
  • Promotes Overall Well-being

We have been dedicated to harnessing the power of Deep Sea Water from the Muroto area, a UNESCO Global Geopark in Kochi, Japan. Backed by advanced technology and strict quality control, we deliver nature’s gift to support a healthier future.

Muroto

UNESCO Global Geopark

Visit Official Site