Throughout the game, you'll encounter ancient murals depicting the history of the ocean and the civilization that once thrived there. Take time to observe these murals closely; they are the primary source of Abzu's lore and narrative.
Each mural tells a part of the story, often foreshadowing events or explaining the purpose of the ancient technology you interact with. Piecing together the narrative from these visual clues is a key part of the Abzu experience.