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Seaweed Commons

Arts & Creative Materials

Working with seaweed as a creative or artistic medium?

Seaweed has been used in craft and cultural practice for centuries, and a new generation of artists, designers, and science-artists is pushing that tradition into biohybrid textiles, living inks, pigments, and experimental materials. This pathway connects creative practitioners with the science, sourcing, and community they need.

Practice areas covered — hover for a definition

Inks & Pigments

Inks & Pigments

Seaweed-derived colorants and print media. Natural pigments extracted from seaweed species, or alginate-based fluid inks with unique flow and mark-making properties. Some practitioners work with fresh seaweed directly as a printing medium.

Biohybrid Textiles

Biohybrid Textiles

Fabrics and fibre systems that integrate living or biological materials including seaweed extracts or whole dried seaweed into the textile structure or surface treatment. An emerging practice at the intersection of design, biology, and material science.

Paper Marbling

Paper Marbling

A centuries-old decorative technique that uses carrageenan as a sizing medium on which pigments are floated and manipulated into patterns before transfer to paper or fabric. Carrageenan provides the right viscosity and surface tension for pigment to spread and hold pattern.

Natural Dyes

Natural Dyes

Plant-based and algae-derived colorants used to dye textiles, paper, and other substrates without synthetic chemicals. Seaweed species offer pigment profiles ranging from amber to deep red, and some species are used as mordanting agents.

Cast Forms

Cast Forms

Three-dimensional objects made by pouring alginate or agar into a mould. Used in sculpture, product prototyping, and material research for their precision detail capture and biodegradability. Alginate dental impression material is the standard reference for this use.

Installation

Installation

Seaweed used as a primary medium in large-scale or site-specific art installations, in fresh, dried, or processed form. Often engaging with coastal ecology, climate, or environmental themes. Requires knowledge of material behaviour over time.

Science-Art

Science-Art

Interdisciplinary practice that brings together scientific research methods and artistic inquiry. Examples include working with marine biologists to grow, harvest, and transform seaweed into art, or using seaweed cultivation as a live installation.

Craft

Craft

Traditional and contemporary handcraft practices using seaweed including basket weaving, botanical pressing, natural dyeing, and coastal material culture. Many of these practices have deep roots in Indigenous and coastal communities.

Mobile: definitions appear in the materials section below.

Materials & compounds

The seaweed-derived materials most used in creative and artistic applications. Each has distinct physical properties that determine how it behaves as a medium. Understanding these properties before you source is the difference between a material that does what you want and one that surprises you.

AlginateThe primary creative material derived from brown seaweed. Forms flexible gels and films. Used in inks, fabric printing, marbling, biohybrid textiles, and cast forms. Working properties vary significantly by viscosity grade and calcium ion concentration.
AgarA firm, clear gel with a long tradition in art and printmaking. Used for agar printing (a photographic contact printing technique), dye transfer substrates, and cast sculpture. Sets harder than alginate and releases cleanly from moulds.
CarrageenanThe traditional base for paper marbling (carrageenan sizing). Also used as a thickener in natural dye baths and sustainable textile finishes. Lambda carrageenan is preferred for marbling because it stays fluid at room temperature.
Natural PigmentsPhycoerythrin (red), phycocyanin (blue-green), and chlorophyll derivatives are natural colorants extracted from seaweed species for inks and dye work. Lightfastness varies considerably and is an active area of practitioner research.

A dedicated space for creative practitioners

Seaweed Commons has a dedicated space for creative practitioners: guides for working with seaweed materials in the studio, a material reference, and a growing community of artists, designers, and science-artists. If this is your world, it was built for you.

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Builders in this space

See artists, designers, and creative practitioners who are building with seaweed.

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Questions about sourcing or material properties?

Whether you need help sourcing a specific seaweed species, understanding extraction methods for a creative project, or connecting with processors and researchers, our advisors can help.

Talk to an advisor