create a realistic black and gray tattoo representing Poseidon. Incorporate elements of an octopus and shark in a harmonious way, ensuring the composition is balanced and visually impactful. Highlight Poseidon's facial details, such as the crown and beard, while smoothly integrating octopus tentacles and the presence of a shark into the composition. Consider the fluidity of lines and shadows to ensure a smooth transition between elements. Feel free to add your unique artistic touch, and remember to focus on realistic nuances to create a captivating and expressive tattoo.", ugly, deformed, noisy, blurry, distorted, grainy