... perceived drops of moisture in the spout, how do you know that they are not merely condensed from its vapour; or how do you know that they are not those identical drops superficially lodged in the spout-hole fissure, which is countersunk into the summit of the whale's head? For even when tranquilly swimming through the mid-day sea in a calm, with his elevated hump sun-dried as a dromedary's in the desert; even then, the whale always carries a small basin of water on his head, as under a blazing sun you ... — Moby Dick; or The Whale • Herman Melville