A diptych composition in which the sea itself is the subject of mercy — or the sea as an embodiment of the merciful, compassionate quality that in Buddhist practice is called karuṇā. Mayumi Oda's ocean compositions consistently personify or deify the sea as a being with its own spiritual qualities, and the "merciful sea" makes this personification explicit: the ocean that sustains all life, that covers seventy percent of the earth's surface, that was the original medium of life's evolution, exercises a compassion toward living beings that is inseparable from its own nature. The diptych format allows the sea's mercy to extend across two panels, the composition's horizontal sweep matching the ocean's own expansiveness.