According to this tradition, these asuras live 84,000 yojanas beneath the ocean floor on the northern side of Mount Sumeru, which are divided into four layers.

How are asuras born?

Both devas and asuras are children of Kashyapa, born of different wives. Devas are called adityas, because their mother is Aditi. Asuras are daityas and danavas because they are children of Diti and Danu. ... Asuras have sanjivani vidya, the herb to bring the dead back to life.

Where did the asuras come from?

asura, (Sanskrit: “divine”) Iranian ahura, in Hindu mythology, class of beings defined by their opposition to the devas or suras (gods). The term asura appears first in the Vedas, a collection of poems and hymns composed 1500–1200 bce, and refers to a human or divine leader.