Frank (left) sits with a fisherman on a jetty in a lake.
The scene depicted in the above screen capture is reminiscent of sailing. It is meant to metaphorically depict the Holy Spirit moving at the beginning of creation. From the bible, Genesis 1:2 [New International Version]:
Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.
The Holy Spirit is one of three entities contained within the Christian Holy Trinity, the other two being God the Father and God the Son (Jesus).