Using a sponge to create a pebbled shore texture on a bowl

A bowl can carry the memory of a shoreline without copying a single pebble. A sponge method turns an ordinary throwing mark into something more tactile: a field of shallow, irregular hollows that catches light, glaze and the eye. The process is forgiving, but thoughtful pressure and the right stage of dryness make the difference.

Barcelona-based ceramic artist Amelia Johannsen draws on both the Pacific Northwest and the Mediterranean coastline, translating those environments into pottery, decorative plates, sculptures and abstract art. Her work offers a useful reminder that texture can suggest a place without illustrating it literally. This guide follows one tactile technique from prepared clay to a finished bowl.

Finding the right sponge

A natural sea sponge is useful because its open cells create a varied pattern rather than a row of identical dots. Hold it against damp clay and you can feel the uneven surface before making a mark. These subtle loops can suggest weathered rock, wet sand and the clustered hollows found where waves repeatedly wash a beach, the kind of nature-led observation reflected in the Amelia Creations portfolio.

A kitchen sponge can work, but its regular holes may look manufactured. Choose a soft, fine-celled sponge for a quieter surface, or a more open one for stronger relief. Squeeze it until it is damp rather than dripping, and check that it contains no grit or loose fibres. A dry sponge may drag across the clay, while an overly wet one can turn the surface to slip.

Preparing the clay and workspace

Start with a smooth, well-wedged ball of clay, free of stones and dry patches. If you are using a wheel, centre the clay and open it before moving on; if you are hand-building, roll and form an even slab. A small test tile will reveal how your clay and sponge respond before you commit the bowl.

A simple materials check keeps the first impression under control:

A wedged ball of smooth, stone-free clay.
A natural sponge, damp but not dripping.
A shallow water bowl and a clean cloth.
A trimming tool, rib and needle.

At the bench, keep excess moisture away from the clay and use a steady rhythm of wetting, pressing, lifting and rotating:

Squeeze out water before touching the clay.
Rotate the bowl after every few impressions.
Support the rim with your free hand.

Shaping a stable bowl

Throw or hand-build a simple form with an even wall and a sound base. A slightly flared profile gives the shoreline effect room to appear without crowding the rim. Avoid thin edges and deep cracks at this stage, since either can make the textured surface fragile.

When the clay reaches a firm, leather-hard stage, place it upside down on a padded surface and support its weight with both hands. Lightly compress the rim with the sponge to soften sharp edges. Wipe away loose crumbs, but do not wash the whole bowl; a little controlled dampness helps the next marks stay coherent.

Building an irregular shoreline surface

With the sponge barely damp, press its broad face against the firm clay. Use a gentle rocking motion, then lift cleanly without twisting while the sponge is still touching the surface. Work around the bowl in overlapping bands, leaving some areas almost smooth so the result feels like a shore rather than a uniform pattern.

Vary the angle and pressure. A face-on press leaves a soft cluster of cells; an angled edge makes a more elongated hollow. Rotate the bowl as you work, and compare the marks with familiar coastal details, such as smooth stones at Margaret River or scalloped sand near Byron Bay.

Texture can also stand apart from a drawn motif. Compare the sponge’s scattered hollows with Amelia’s raised botanical designs, where slip trailing builds controlled lines. One approach creates an all-over geological surface; the other makes imagery that rises above the clay.

Stop before the impressions become cavities. Check the rim and wall thickness, especially on a wider bowl. The surface should read as tactile under a fingertip, not as a vessel weakened by deep pocking.

Drying, glazing and firing

Allow the bowl to dry evenly, keeping it away from sudden heat, wind and direct sun. A humid box can protect the base while the covered rim slowly loses moisture; plastic wrap should not touch the textured surface. Follow the clay supplier’s drying advice, particularly during a hot or dry Australian week.

Once fully dry, remove every loose crumb and fire the work in the sequence recommended for that clay body, usually bisque firing followed by glaze firing. A transparent or lightly coloured glaze can settle into the hollows and make the texture clearer, while a thicker glaze softens it. For food use, choose an appropriate clay body, glaze and firing combination, and keep the unglazed foot clean for a stable shelf or table.

Local pottery studios often share kilns, so label every work with its clay body and firing plan. Raw sponge marks can hide tiny pockets of moisture; a slow, complete dry helps prevent cracks or blowouts. Do not assume a heavier glaze will fix an unstable piece.

Coastal references for Australian studios

Australian makers have coastlines close at hand, from the surf beaches of Byron Bay to the sheltered inlets of Port Phillip Bay, with Margaret River offering another distinct rhythm of sand and stone. Rather than giving a bowl a generic beach identity, choose a specific place and notice its colours, erosion and shifting light.

Local studio culture often encourages a relaxed “have a go”, with a wobble on the wheel earning encouragement and a “no worries” rather than a lecture. Metric measurements, labelled clay bodies and shared kiln schedules are ordinary workshop practice. Many makers sell through open studios, local markets and Instagram, so a finished piece must travel well and photograph clearly.

Studio visits and community gatherings often become part of an artist’s story. A memorable community meet-and-greet offers a parallel example of how a personal encounter can stay with a creative community. For makers, these informal connections can be as valuable as a polished sales display.

Showing the work and sharing its story

Good documentation begins with the object itself. Photograph the bowl in soft, angled light so the little hollows cast visible shadows, and include a straight-on image for accurate shape and colour. The visual reference offered by Max Goh photography demonstrates the broader value of lighting and framing, helping a surface become part of the story rather than an incidental detail.

Record the clay body, glaze and firing temperature before the bowl leaves the studio; those details help you reproduce the surface or explain its character. For everyday use, wash a glazed piece by hand and let it dry fully. Keep an unglazed textured bowl for decorative objects rather than direct contact with food.

Put your hands in clay and explore Amelia Creations for available and sold works. Follow the studio on Instagram, subscribe to the mailing list for news of upcoming pottery workshops, and watch for hands-on clay experiences with wine and tapas.