Watatsumi is a deity in Japanese mythology, often associated with the sea and water. He is considered the god of the ocean and is revered for his ability to control tides and marine life. Watatsumi is sometimes depicted as a dragon or a serpent, symbolizing his connection to water and its power. In some traditions, Watatsumi is also linked to the Ryujin, the dragon king of the sea, and is believed to protect fishermen and sailors. His worship is prominent in coastal regions of Japan, where shrines dedicated to him can be found, reflecting the importance of the sea in Japanese culture.