The animal that produces its own sun tan lotion is the hippopotamus. Hippos secrete a red-colored oily substance from their skin that acts as a natural sunscreen, protecting them from the harsh African sun. This secretion also helps to keep their skin moist and supple.

The hippopotamus, often associated with its massive size and formidable appearance, possesses a remarkable adaptation that sets it apart in the animal kingdom. Unlike humans who rely on external sunscreens, the hippopotamus produces its own natural sun tan lotion.

These semi-aquatic mammals, native to Africa, are well-suited to a life spent in and around water. To protect their sensitive skin from the intense African sun, hippos secrete a distinctive red-colored, oily substance. This secretion not only acts as a natural sunscreen but also serves other crucial purposes in their daily lives.

The red pigment in the secretion, often referred to as "blood sweat" despite not being blood or sweat, is a combination of hipposudoric acid and norhipposudoric acid. This unique concoction not only provides a level of protection against the harmful effects of ultraviolet (UV) rays but also helps to keep the hippo's skin moisturized and supple.

As these massive creatures spend a considerable amount of time submerged in water during the day, the red secretion acts as a natural moisturizer, preventing their skin from drying out. The oily nature of the substance creates a barrier that helps retain moisture, ensuring that the hippo's skin remains hydrated in their semi-aquatic habitat.

This adaptation showcases the incredible ability of animals to develop mechanisms that suit their environmental needs. The hippopotamus's natural sun tan lotion is a testament to the ingenuity of nature, providing a unique solution to the challenges posed by the harsh African sun and contributing to the overall well-being of these fascinating creatures.