Why are we committed to the sea? In the words of John F. Kennedy, we are all tied to the sea, biologically. All of us have in our veins the exact same percentage of salt in our blood that exists in the ocean. Therefore, we have salt in our sweat, blood and tears. We are tied to the ocean. When we go back to the sea, we go back from which we came. Carnival invites you to come back to the sea.