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The Pink River Dolphins of the Amazon River in South America are pink-colored because they have a lot of blood vessels near the surface of their skin, so that they can better control their body temperature.

The pink river dolphin of the Amazon River is rare. There is no conclusive evidence as to why the dolphin is pink. They do have an excessive number of capillaries near the surface of the skin. They get pinker when excited or surprised, similar to when humans blush.

It is because of the amount of exercise they normally do. You see, "Pink" River dolphins are usually dull white or pale blue. But, as soon as they start to swim around and tire themselves out they become pinker. Just like us humans when we exercise. I hope this answer pleases you.

The Pink dolphins (such as the Amazon river dolphins) have been found to have more oxygen-carrying capillaries (blood vessels) near the surface of their skin than other dolphins. It is believed that this enables them to better control their body temperature, also known as thermoregulation.

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8y ago
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Anaika Khatod

Lvl 2
4y ago

Because of the dark and murky water.

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Q: Why are Pink Dolphins pink?
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