A massive humpback whale breaching from crystalline sapphire ocean waters during golden hour, traditional watercolor painting, loose wet-on-wet washes depicting powerful arched body emerging from foaming waves with spray droplets scattering in all directions, cool deep navy and teal tones of open ocean depths, warm brilliant amber and soft coral light from setting sun catching the whale's dark glossy skin and creating luminous rim lighting on splashing white foam, visible bold brushstrokes capturing muscular body contours and cascading water trails, paper texture visible throughout, awe-inspiring majestic mood, diagonal composition with whale as magnificent focal point against endless golden horizon and distant rolling waves