The central focus is a black and white shark-shaped submarine gliding through an underwater scene. Inside the shark's cockpit, the character Tintin, with his signature ginger hair, is visible at the controls alongside his small white dog, Snowy. A stream of white air bubbles rises from the submarine towards the surface, adding a sense of movement to the composition.
The setting is a calm, sandy ocean floor populated by minimalist sea life. Tall, thin strands of green seaweed grow upwards from the bottom left, while several colorful, stylized corals and sponges in shades of pink and purple rest on the beige seabed at the bottom right. The background is a solid, light cyan blue, consistent with the clean, bold aesthetic of a comic book illustration.
The artwork follows a clear line-art style with flat, vibrant colours, typical of the classic graphic novel medium. The composition is balanced, with the submarine positioned in the center, creating a peaceful yet adventurous mood. The simplicity of the forms, combined with the iconic character designs, emphasizes a clean and readable visual narrative. The lighting is uniform and bright, characteristic of the 'ligne claire' artistic technique.