Cute flat-vector illustration, portrait orientation. A big, adorable sea otter floats on its back, cuddling an emotional support pebble to its chest. The pebble is smooth gray with a tiny smiling face and a small pink heart, emphasizing its “support” vibe. The otter has warm cocoa-brown fur, a cream muzzle and belly, rosy cheeks, closed happy eyes, and a tiny striped party hat tilted playfully. Surrounding water is calm teal with simple concentric ripple arcs; a few ribbonlike kelp strands and scattered confetti shapes (stars and dots) in pastel coral, lemon, and lavender add birthday cheer. Large simple shapes, crisp clean strokes, solid color blocks, minimal gradients, no textures; subtle soft shadow under the otter for depth. Plenty of negative space so the character dominates.

Include a small single-line caption near the bottom center in a bold rounded sans-serif, white or cream with a soft shadow for contrast:

“Have an otterly rock-solid birthday!”

Modern graphic precision, cute mood, high-contrast, flat vector style. No other text or logos.

Generated with these themes: Otter holding an emotional support pebble, and .

Made with ❤️ by AI.