Four large boxes containing unidentifiable, sun-bleached items are lined up in his studio, which is situated in a characteristic red house in the middle of the harbor of Scheveningen. It’s one of the few original old buildings that remain after the extensive developments in this area. If you're walking around the beaches of Scheveningen in the early mornings, there's a good chance you'll see Dim Rooker wandering around, looking for washed-up items. "These worn-out pieces somehow trigger my imagination," he says. "Looking closer at these materials, I wonder what they used to be, where they're from, and how long they've been drifting around in the North Sea. I collect the items that intrigue me."

The vast sea, connected to the entire world, is an inexhaustible source of inspiration for Dim. “While surfing, I naturally enjoy the waves, but just as much, I relish the sight of a seagull flying overhead, a seal surfacing, a jellyfish shimmering in the water, the colors of the sky, and gazing at the horizon.” Dim’s immersive experiences with these natural elements are reflected in his artworks.

Each work starts with a horizon and from there, compositions and the notion of depth are created with layers of different materials, such as paint, fragments of photographs, nautical maps, rope, and other washed-up items from the shoreline. Contrary to the structured creation process in his applied graphic design work, each of his artworks results from a series of impulsive choices. In this playful process, there is no preconceived idea or visual outcome in mind. "I like to just set myself free and let it flow. This makes it exciting for me to work on. This way, I never know how it will turn out."

Creating art seems to be in his blood. Dim and his brother Mark have been strongly influenced by their mother. She has spent most of her life as a passionate artist, creating colorful paintings in wonderful locations. In her artworks, she incorporated items collected during her travels.