SEAMATTER. Materials Shaped by the Sea.
EN

From the depths of the sea.
To the matter of your spaces.

Marine composite mineral made from waste from the fishing and aquaculture industries.
For architecture, signage and branded spaces.

Others' waste.
SeaMatter's raw material.

+325K

Tonnes of shells per year

In Europe without an industrial destination

+24M€

Annual management cost

Paid by the industry each year

+600K

Tonnes of nets per year

Unrecycled fishing nets

600

Years to degrade

The plastic in nets persists for centuries

The sea turned into material.

A process based on consolidated industrial technology.

1

Collection, cleaning and drying

Aquaculture seashells and fishing nets recovered.

2

Grinding and preparation

Reduction of waste into marine mineral powder and polymer flakes.

3

Marine mineral composite

Blending of both materials using industrial compounding technology.

Recognisable at first glance.

Traceable origin

Every component documented from waste to installed piece.

Distinctive aesthetic

The texture of marine minerals is one of a kind. Each panel carries the sea within.

Technical performance

Greater rigidity, thermal stability, passive acoustic properties and fire resistance.

Verifiable narrative

Transparency and trust with verifiable data and facts.

We do not declare.
We measure.

24kg

Valued waste / m²

Marine waste valorised per square metre produced

26.9

kg CO₂eq / m²

23%–40% less than the materials it replaces

5

Aligned SDGs

Not just green.
Fair too.

SOCIAL IMPACT COLLABORATION

Specialist entity in the architecture of social impact collaborations

Employment integration of people with functional diversity and measurement of their footprint.

Coordination of SeaMatter's impact model.

Social impact is part of the product design, not an add-on.

Ready to be part of SeaMatter?

Whether you want to invest, collaborate or use the material in your next project.

Where space tells a story.

Applications where the origin of the material is part of the spatial experience.

Corporate signage

Brand spaces that tell the story of where the material comes from.

Premium interiors

Kitchens, residential and contract spaces where sustainability can be touched.

Brand displays

Unique pieces for showrooms and experience spaces with a verifiable narrative.

Got a project in mind? Let's talk.

Validation that isn't improvised.

🏆 GoDigital 2025

Sustainability Award

Recognition for the project with the greatest environmental impact among the finalists of the GoDigital Pitch Valencia 2025 programme.

🏆 Crea Crece 2025

1st Prize — Chamber of Commerce of Valencia

First prize among the entrepreneurial projects presented to the Valencia Chamber of Commerce acceleration programme 2025.

EOI Incubation Programme 2025–26

Inclusive Impact Co-Working Valencia

Selected among the projects with the greatest potential for social and environmental impact in the national programme of the Escuela de Organización Industrial.

Who is behind it.

Carina Caldeira

CEO & Founder

Marine Biologist · MSc Aquaculture and Fisheries.

+15 years of research
+18 indexed scientific publications.

Operational Network

Industrial partner

Valencia, Spain

Marine mineral supplier

Europe

Marine polymer supplier

North Atlantic

Team in build-up. New hires planned in operations, LCA and sustainable architecture from Q3 2026.

Be the first.

The full deck is available on request.

150K€

Total round · 3 phases

65K€

Phase 1 · Project launch

Let's talk.


Would you like to invest?

Share your investment thesis and let's talk.

Would you like to work with us?

Architects, designers, distributors and brand projects — we're open to collaborating.

ccaldeira@seamatter.es

SeaMatter · Materials Shaped by the Sea · Valencia, Spain