It is the only species of penguin that lives in Africa.

Members of the toothed " Toothed whale" family, such as the Common bottlenose dolphin and Pacific white-sided dolphin, have almost completely lost their olfactory structures, such as the nerves that sense smell.
This is because dolphins live in water and do not need it during the evolutionary process.

The melon organ is made up of fatty tissue, not brain.
It is so called because this fatty tissue resembles the appearance of a melon.
It acts like a lens that converges sound in one direction & radiates it forward.

Common bottlenose dolphin can swim at speeds of 30-40 km/h and Pacific white-sided dolphins can swim at speeds of 50 km/h.

Of the 18 species of penguins in the world, only the gentoo penguin has yellow feet. Look at their feet.