A species of dolphin is born naturally blind in the Indus and Ganges rivers in South Asia. These dolphins have a highly sophisticated sonar system and swim on only one side of their body. (Added: Thu Oct 31 2002) Comment On This Amusing Fact
How does a dolphin sleep if it lives underwater but has to breathe air? The solution is a series of short naps. The dolphin's brain divides itself in two, that is, one half is asleep while the other half stays awake to get the dolphin to the surface for air. (Added: Mon May 31 2004) Comment On This Amusing Fact
