CHAP. 49.—THE SAILING NAUPLIUS.
Mucianus also relates that he had seen, in the Propontis, another curious resemblance to a ship in full sail.2553 There is a shell-fish, he says, with a keel, just like that of the vessel which we know by the name of acatium,2554 with the poop curving inwards, and a prow with the beak2555 attached. In this shell-fish there lies concealed also an animal known as the nauplius, which bears a strong resemblance to the sæpia, and only adopts the shell-fish as the companion of its pastimes. There are two modes, he says, which it adopts in sailing; when the sea is calm, the voyager hangs down its arms,2556 and strikes the water with a pair of oars as it were; but if, on the other hand, the wind invites, it extends them, employing them by way of a helm, and turning the mouth of the shell to the wind. The pleasure experienced by the shell-fish is that of carrying the other, while the amusement of the nauplius consists in steering; and thus, at the same moment, is an instinctive joy felt by these two creatures, devoid as they are of all sense, unless, indeed, a natural antipathy to man—for it is a well-known fact, that to see them thus sailing along, is a bad omen, and that it is portentous of misfortune to those who witness it.