Roadsweeper Dropping D; (kahow)

Ages ago, life was born in the primitive sea. Young life forms constantly evolved in order to survive. Some prospered, some did not, all sorts of life ebbed and flowed like the tide. In the quiet rhythm of the mother sea, life grew, always seeking to survive and flourish. Soon life began to advance towards land, opening new habitats. A great prosperity came, as life conquered even the highest mountains. Mass extinctions came wave after wave, but empty niches always quickly refilled, to once again prosper, grow, and reproduce. Someday the next great emigration will occur, as we leave this existence looking for another. The journey will begin anew. I hold within me, the memories of all that has passed. Who am I...