Envision a serene illustration of the icon of the seas, a sea turtle, slowly gliding through the calm waters, with a subtle coral reef in the background, and a few fish swimming lazily around it, with a warm golden light filtering down from above.

Design a vibrant illustration of the icon of the seas, a dolphin, leaping out of the water, with a burst of water droplets and sunlight reflecting off its shiny body, set against a bright blue sky with a few puffy clouds.

Create an illustration of a majestic icon of the sea, a majestic blue whale, swimming in the open ocean, with a subtle sunset glow in the background, surrounded by a school of small fish and a hint of seaweed swaying in the current.