Thirst in Mid-Ocean, from Kon-Tiki Across the Pacific by Raft by Thor Heyerdahl

Even if our predecessors had started from land with inadequate supplies, they would have managed well enough as long as they drifted across the sea with the current, in which fish abounded. There was not a day on our whole voyage on which fish were not swimming round the raft and could not easily be caught. Scarcely a day passed without flying fish, at any rate, coming on board of their own accord. It even happened that large bonitos, delicious eating, swam on board with the masses of water that came from astern and lay kicking on the raft when the water had vanished down between the logs as a sieve. To starve to death was impossible.