An exquisitely detailed diorama featuring a three-layered underwater cake with a menacing black pirate ship perched atop, sails billowing dramatically. Below, a monstrous Kraken unfurls its tentacles in a captivating dance beneath the waves, set against a beautifully designed cosmic backdrop that captures the boundless universe. The scene is crafted with hyperrealistic precision and intricate detailing, enhanced by dramatic, moody lighting that accentuates the fantastical elements. Utilizing the cutting-edge capabilities of the unreal engine for unparalleled photorealism and depth of field, this composition is presented in stunning 8k resolution and framed in the captivating dimensions of a 9:16 aspect ratio, offering a breathtakingly artistic exploration of myth and imagination.