Yes, the color blue is very common in sea animals. This is because blue light penetrates deeper into water than other colors, making it more visible to marine organisms. Many sea creatures, such as fish, squid, and jellyfish, have evolved to use blue coloration for various purposes, including camouflage, communication, and attracting mates. Blue coloration can also help animals blend in with their surroundings in the ocean, making them less visible to predators or prey. Overall, the prevalence of blue coloration in marine life is a result of the unique properties of light and water, as well as the selective pressures that have shaped the evolution of these organisms.
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