However, they are the only semi-aquatic animals which live within Sub-Sahara Africa and their closest living relatives are cetaceans like whales and dolphin. In respect to this, it is not a very surprising fact that hippos spent 16 hours a day immersed in water.
Hippos rise every three to five minutes for air even when they are sleeping. Hippos produce an oily red liquid for the sun which functions like sun cream and protects their skin. They have huge size, sweet faces and large bodies.
There are many factors which makes hippo a very important part of an ecosystem. They spend so much time immersed in water that they help in enriching rivers by stirring the mud on the floor. Their excretion has ingredients which are useful for the survival of many aquatic creatures including fish which live in waters.
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