Underwater Fun Birthday Card

This card features a cheerful underwater scene with a stylised sea creature centred in an aqua-blue water space 🎉. The creature has a bright yellow body with green stripes, a purple ridged fin along its back, and matching purple tail fins that curl into a little loop. Rosy pink cheeks and one large, shiny eye give it a friendly look, like it’s leaning in for a warm hello from a close friend. Around it, green sea plants rise on both sides while soft pink coral shapes rest along the bottom, adding a gentle, cosy garden feel. Small white bubbles float upward through the water, giving the scene a light, floating motion. Near the top, a banner holds a birthday message in dark lettering, set clearly against the blue background 🎂. The whole illustration sits inside an earthy orange border with strong black outlines, and the bottom edge shows rounded pink coral mounds beneath the green fronds.