Yes, I would consider Adam a complex entity. ;-)
Adam was the last of God's creations.
Sea creatures were the first animals according to Genesis 1:20.
20 And God said, "Let the water teem with living creatures, and let birds fly above the earth across the expanse of the sky."
21 So God created the great creatures of the sea and every living and moving thing with which the water teems, according to their kinds, and every winged bird according to its kind. And God saw that it was good.
22 God blessed them and said, "Be fruitful and increase in number and fill the water in the seas, and let the birds increase on the earth." 23 And there was evening, and there was morning—the fifth day.