Vector image postcard with marine theme, turtle, nautilus, fish, sea stars, coral, blue watercolor fragment and text space on white

A marine watercolor composition featuring an elegant turtle, rendered in delicate blue tones. The central element is a graceful sea turtle, intricately detailed with fine white lines against a backdrop of airy watercolor washes in sea-wave hues. Next to the turtle, one can notice an exquisite nautilus — an ancient sea creature with a distinctive spiral shell. The composition is enhanced by light silhouettes of fish gliding smoothly among water currents, sea stars with meticulously crafted textures, and coral branches that add depth to the underwater landscape. The upper part of the drawing is adorned with a round, jellyfish-like element resembling sunrays piercing through the water's depth. The watercolor technique creates an effect of transparency and weightlessness, as if the viewer is observing the underwater world through crystal-clear water. The white space surrounding the blue fragment is intentionally left for text placement, making the image functional for use as a postcard, invitation, or decorative element. Such an illustration is perfectly suited for designing greeting cards with a marine theme, invitations to beach events, wedding accessories in a nautical style, book covers about sea voyages, or decorative panels in interiors with a marine motif.