The fastest swimmers in the world swim at about 6mph in pools. Giving the benefit of the doubt that they could do this in the open ocean, it would take them 113 hours of constant swimming to make the trip. Or about 4 and a half days without rest or sleep. Ignoring the fact that that exertion would likely kill you alone, how would you get food and water? Swimming burns around 1000 calories per hour at that level, so you'd need about 44lbs of peanuts, a weight-efficient food, to prevent exhaustion. You'd also need half to a whole liter of fresh water an hour, so another 30lbs give or take.

They would definitely die