A fantasy illustration of whales and orcas swimming in a cosmic ocean under a vibrant sky with planets.

This surreal fantasy illustration depicts a vibrant cosmic seascape. In the upper portion of the image, the sky is dominated by a dramatic, fiery nebula featuring swirls of deep purple, electric blue, and brilliant gold. Three celestial spheres, resembling planets or moons, hang in the vastness of space above a luminous, glowing horizon that suggests a planet atmosphere.

In the middle ground, a large humpback whale breaches majestically from the water, its tail creating a splash against the backdrop of a radiant, sunset-hued horizon. The water itself transitions from a bright, sun-drenched surface to a dark, mystical underwater world in the foreground. Here, a pod of orcas glides gracefully through the deep, surrounded by rocky terrain and bioluminescent-looking flora on the ocean floor.

The overall colour palette is highly saturated, transitioning from the dark, cool tones of space at the top, through warm oranges and yellows in the mid-section, to deep, moody teals and shadows in the depths of the ocean. The lighting is ethereal and otherworldly, blending the vastness of an alien galaxy with the serene life of marine mammals. The artistic style is detailed and dramatic, typical of science fiction and fantasy landscape paintings, with smooth gradients and striking contrasts between light and dark.