Imagine a stunning scene where a group of mermaids gracefully swim through a galaxy full of shimmering stars, their tails glowing with the light of distant suns. Above them, a massive black hole looms, swirling with mysterious energy as colorful nebulae dance in the background. The contrast of the serene underwater world with the vastness of space creates a truly mesmerizing and otherworldly image.

Picture an awe-inspiring scene set within a vivid, star-filled galaxy. Within this celestial setting, witness a diverse group of mermaids, each sporting radiant tails that glow with the luminosity of far-off suns, smoothly navigate this interstellar waterscape. Hovering ominously above them is a titanic black hole, aglow with an enigmatic aura of energy. Further in the background, a multitude of vibrant nebulae perform an enchanting cosmic ballet. This scene brilliantly intertwines the tranquility of an underwater world with the unending expanse of the cosmos, resulting in an extraordinary and surreal visual experience.