“God said, ‘Let the water swarm with living creatures and let birds fly above the earth across the expanse of the sky.’ ” (Genesis 1:20)
If God hadn’t created the sea creatures and birds, we’d be in big trouble. First of all, we wouldn’t be eating salmon, tuna, chicken, turkey, or grouse without the 5th day of creation.
Do you know that without the sea creatures, the water would be very dirty? That’s because sea creatures like the crayfish clean up the water. Some birds, like ducks, do the same.