What did Jesus see as the heavens opened after his baptism?

Answer: The Spirit descending like a dove

As Jesus came up out of the water, the heavens opened and he saw the Spirit of God descending like a dove and resting on him.

“As soon as Jesus was baptized, He went up out of the water. Suddenly the heavens were opened, and He saw the Spirit of God descending like a dove and resting on Him.”— Matthew 3:16 (BSB)