Final answer:
God spoke of great sea monsters and every living creature that moves to showcase his power and creativity as the ultimate creator.
Step-by-step explanation:
In the Biblical Book of Genesis, God speaks of the two creatures: great sea monsters and every living creature that moves, along with every winged bird. These creatures were created on the fifth day of creation. It is believed that God used these particular creatures to emphasize the diversity and abundance of life on Earth. Through creating different types of creatures, God showcased his power and creativity as the ultimate creator.