a cool, mysterious color gradient depicting the depths of the ocean.

cool mysterious color gradient depicting depths ocean dark blues fading bioluminescent greens aigenerated sea blue fish water diving diver abstract ink subnautica underwater deep tentacles modern contemporary fluid watercolor indigo navy minimalist waves squid shark mermaid siren depth octopus nature scuba swimming adventure nitrox silhouette swimmer wet acrylic liquid flowing trendy shipwreck ship rocks cute frog dinghy art adorable frogs explorer whimsical amphibian oceanic asian style artwork suit subaquatic fantasy character expedition imaginative discovery