Ocean DeepTech  ·  Hiroshima, Japan  ·  Est. 2021

Using barnacles as an entry point,
we illuminate the ocean.

A surface modification technology born from the shared challenge every marine operator faced equally has now reached ecosystem restoration, soil regeneration, and even desert greening.

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Walking among oyster farmers, we noticed something.Everyone was struggling with the same problem.

Ships, aquaculture rafts, power plant cooling systems, underwater infrastructure — barnacles were a problem at every marine worksite. And underneath all of it was another problem: "ocean data barely exists." Solving the barnacle problem was the entry point to making the entire ocean visible.

40%+
Oyster mortality rate
from barnacle attachment
3 zones
Demonstrations completed
in Hakodate · Hiroshima · Ariake
75%
Reduction in soil preparation
time with Nano-Husk
$70B+
Marine industry market
grown 7x since our founding
Kurashima Island Demonstration Field
Kurashiki-jima, Kure, Hiroshima
Our Philosophy

Barnacles are not
the enemy.

Barnacles are crustaceans — purifiers of the sea. Darwin spent eight years studying them. The problem is not the organism; it is that we have failed to design coexistence.

So our answer was not to change nature, but to change the surface of materials. The same technology can be used both to repel and to attract adhesion — and this dual nature solves entirely different social challenges.

Core Technology
Proprietary Nano Surface Modification Process
Repel
Inhibit
adhesion
Antifouling · Hull cleaning · Oyster rafts
Surface
Control
Attract
Promote
adhesion
Seagrass restoration · Soil revival · Desert greening

Technology transferred from dental/medical and rare earth fields. Material surfaces modified using multi-process approach: pressure, plasma, electrochemistry. Patent No. 5963133 and others.

Solutions

The barnacle question
reached the desert.

01
MVP Complete · Field-tested
Ships, oysters, and the ocean can coexist.

Zero-toxin dual-film treatment prevents barnacle attachment for 6 months. ROV with cavitation water jet removes barnacles without damaging hull or coating. Satellite × IoT aquaculture raft collision prevention DX also in development.

TAM $70B+  ·  Fuel efficiency +18–30%  ·  CO₂ reduction 4,000t/year (per vessel)
Star★Pitch Japan Silver
MITANI Contest Double Award
Shenzhen Green Innovation
Japan Representative
02
Pilot ongoing
Antifouling technology nurtures the ocean.

By inverting the surface treatment to the adhesion-promoting side, we developed a biocode that facilitates seagrass root adhesion. Demonstrated in 3 sea zones: Hakodate, Hiroshima, and Ariake. Participating in TV New Hiroshima "Hiroshima Ocean Forest Project."

J-Blue Credit  ·  Hakodate NIT joint research  ·  3-zone demonstration
Demonstrations across different
temperatures, salinity, and sediment
prove the principle itself.
03
Commercialization phase
Restore soil microbes. Revive the land.

Modified rice husk (Nano-Husk) creates a scaffold for microbial colonization. World's first simultaneous colonization of 3 bacteria: photosynthetic, actinomycetes, and natto bacteria. 75% reduction in soil preparation time.

Zero CO₂ emissions  ·  Non-carbonization process  ·  World-first 3-bacteria simultaneous colonization
The real reason deserts don't
become forests isn't only dryness —
it's the absence of soil microbes.
View Technology Details →
Sustain first.
To sustain the ocean,
we must first sustain ourselves.
— SeatecHIROSHIMA
Our Way

Sustain first.
Profit second.

Most people who work at sea are sole proprietors. The average annual income of fishermen is around 2 million yen; the average age is approaching 60. The real challenges have piled up in places left out of the innovation market.

Before being technologists, we want to be the "right translators" bridging the language of researchers and the language of fishermen. Based in Hiroshima and Kure — one step at a time, like a slow jog.

A world where people and the ocean keep smiling— SeatecHIROSHIMA
SeatecHIROSHIMA Team
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Bring us your challenge.

Our demonstration field on Kurashima Island, and our surface modification technology, are right here. All that's missing is your challenge. We welcome inquiries for joint research, demonstration projects, and consulting in marine, agricultural, and infrastructure domains.