折纸蝠鲼，折痕就是骨架

One origami manta ray folded from a single sheet of muted ocean-blue paper resting above pale sand-colored card, sharply legible fold planes, broad wings and a narrow tail, soft realistic grounding shadow, handcrafted tabletop photograph, no strings or multiple models. Square 1:1 standalone finished image. No text, logo, watermark, border, grid, multi-panel layout or contact sheet.

一张低饱和海蓝纸折成的单只蝠鲼，放在浅沙色卡纸上。折面清楚，宽双翼与窄尾，柔和真实接触阴影，手工桌面摄影，不加绳线或多个模型。 方形1:1独立完整成图。不要文字、标志、水印、边框、网格、多格排版或联系表。