For over one thousand years the shiny egg lay on the waters of the Causal Ocean in the lifeless state. Then the Lord entered it as Garbhodakasayi Visnu

Expressions researched:
"For over one thousand years the shiny egg lay on the waters of the Causal Ocean in the lifeless state. Then the Lord entered it as Garbhodakasayi Visnu"

SB Canto 3

For over one thousand years the shiny egg lay on the waters of the Causal Ocean in the lifeless state. Then the Lord entered it as Garbhodakaśāyī Viṣṇu.

SB 3.20.15, Translation and Purport:

For over one thousand years the shiny egg lay on the waters of the Causal Ocean in the lifeless state. Then the Lord entered it as Garbhodakaśāyī Viṣṇu.

From this verse it appears that all the universes are floating in the Causal Ocean.