Cape Muroto surrounded by the blue Pacific Ocean in Kochi, Japan.

In Muroto, at the frontier of land formation.

Muroto Deep Sea Water

Naturally Occurring Ocean Electrolytes from Kochi, Japan

Sourced off Cape Muroto in Kochi Prefecture, Japan.
Our intake draws pristine deep sea water
from approximately 320–374 meters below the surface.

Map of Japan with an enlarged inset of Kochi Prefecture and a marker at Cape Muroto.

Why Muroto Is Different

  • Rare coastal upwelling environment
  • Clean, stable deep-water conditions
  • Naturally occurring minerals
    and trace elements
  • Naturally balanced
    electrolyte profile
  • Source area linked to
    Muroto UNESCO Global Geopark
Cross-section showing an intake pipe and deep ocean currents rising toward the coast.

Surface waterMore variable

Deep sea waterStable and nutrient-rich

Only about 0.1%

of the ocean surface is associated with coastal upwelling regions.

Our Journey of Innovation

  1. 1985

    Muroto area designated as a research model area for deep sea water utilization

    Aerial view of Cape Muroto and its rocky coastline.

  2. 1989

    Japan’s first onshore deep-sea water intake facility established in Kochi

    The onshore deep-sea water intake facility overlooking the ocean in Kochi.

  3. 1996

    Products using Muroto Deep Sea Water launched

    The Muroto Deep Sea Water facility with its curved blue roof.

Rare by nature. Valuable by origin.

A coastal intake pipe descends through the sea to collect deep sea water above the seabed.

Why Deep Sea Water

What Deep Sea Water Means and Why Depth Matters

Deep sea water generally refers to seawater collected from depths below 200 m, where sunlight does not effectively reach. The environment stays cold and stable, with less influence from short-term surface fluctuations.

0 mSea surface
0–200 mSurface water
Sunlight reaches this zone.
It is affected by weather, tides, and surface conditions.
THERMOCLINEAround 100–200 m
A transition layer where temperature changes rapidly with depth.
Below 200 mDeep sea water
Sunlight does not effectively reach. The environment is cold, stable, and less affected by short-term surface fluctuations.
320–374 mMuroto intake depth
Seawater is collected from this depth range through the intake pipe.
Seabed
Approximately 1,000 m

Deep Sea Water vs Surface Water

DEEP SEA WATER (Below 200 m)CharacteristicSURFACE WATER (0–200 m)
Sunlight does not effectively reach.Sunlight
exposure		Sunlight reaches.
Affected by day–night and seasonal changes.
Cold and stable year-round.Temperature
stability		Warmer and fluctuates with temperature, seasons, and weather.
Lower risk of surface-derived pollutants.Pollution
risk		Higher risk of urban runoff, rainfall, and surface pollutants.
Mineral composition is stable and consistent.Mineral
stability		Mineral levels vary with weather, rivers, and biological activity.

Depth Creates Purity. Stability Creates Value.

Deep sea water from below 200 m supports a wide range of beneficial uses.

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