A whimsical minimalistic pattern for a children's t-shirt design, showcasing the enchantment of an underwater world. Delicate fishes swim playfully amidst a serene backdrop of light blue, while slender aquatic plants sway gently in the currents. A curious diver adds a touch of adventure to the scene. The design, created in a clean and minimalistic clipart style, features simple shapes and a restrained color palette, offering a visually pleasing and calming representation of the underwater realm,