Interpretation:
When God created human beings, God found Izanagiii, a fish, and Izanami, a sea snake in the muddy ancient ocean. To these two couple, God added the good qualities of Kunisazuchii, Tsukiyomi, and other sea creatures. Then from God, the Original pure mind was added to the first parents to begin human beings.
Definitions:
Heaven's Truths, in Living the Joyous Life 