As the protector god, Vishnu is often depicted as sleeping blissfully on an ocean of milk.
But that's a deceptive image.
Duty-bound, Vishnu is always vigilant and descends into the world in one of his avatar forms whenever humanity is threatened by evil or chaos.
The Dashavataras are Vishnu's top-ten incarnations to destroy evil and establish righteousness.
In the third volume of the series, The Galaxy of Hindu Gods , we begin the avatar saga by exploring the tales and legend.