The picture illustrates the process by which oceanic water is converted to rain and how it makes its travel back to the ocean in the format of a cyclic chart.
Overall, the water evaporates and results in formation of clouds which under right environmental conditions showers down as rain which in excess will be transported to the nearby body of water and this process is inevitable for sustenance of life.
Initially, water bodies spanning across earth undergo heating due the Sun light exposure over the surface which leads to conversion of water to vapour by the phenomenon termed Evaporation. Majority of water vapours, about 80% of them in the atmosphere is attributed to the Oceans. These hot vapours in the next step, cools down and forms water-laden rain clouds. These clouds cause precipitation in the landward face of the ocean supporting vegetation and livelihood.
Further, the excess surface runoff due to the precipitation will infiltrate through the pores of the soil and reach ground water table. Ground water near the shore area are usually invaded by saltwater hence these channels acts as a passage for the runoff water to reach the ocean again.