Do not depict Pikachu and the whales in any unnatural colors other than Pikachu's signature bright yellow fur and the natural hues of whales. Avoid adding any elements that would disrupt the serene and harmonious atmosphere of the scene, such as harsh or artificial lighting, overly busy backgrounds, or any objects that don't belong in a cosmic or underwater setting. Ensure that Pikachu does not appear aggressive or out of character, and the whales should not be portrayed in a way that contradicts their majestic and peaceful nature. Exclude any imagery that would take away from the tranquil and awe-inspiring ambiance of a cosmic ocean.