M como el mar

Is there anyone on the other side? Is there anyone where the waves disappear? Someone like me? And what is he like? Have they also told him he's small? We know little about M, only the initial of his name, that he's no longer a child, that he's on the beach and would like to be like the sea, that he has blue eyes, that sometimes he's sad, that sometimes he shouts but has no voice, he thinks a lot and asks himself many questions: Is there anyone on the other side? Is there anyone there where the waves disappear? Someone like me? And what is he like there? Have they also told him he's small? And how can you be so sad with sunshine like this? And so happy at the same time?