The pediatrician's instructions were clear: "Put him in the sea as soon as he is born. Babies are as familiar with water as fish..." And yet. If some babies are born "mermaids" or "dophines", others abhor water at all costs.
According to scientific studies, not all children are "lovers" of the sea, nor do they achieve the same resistances on the scale of fear.
Each child is a separate case, a different entity whose preferences we must respect, whether we like them or not.