At such times, it looks like a mere ripple in the water. It resembles anything except a living creature.
The devil-fish is crafty. When its victim is unsuspicious, it opens suddenly.
A glutinous mass, endowed with a malignant will, what can be more horrible?
It is in the most beautiful azure depths of the limpid water that this hideous, voracious polyp delights. It always conceals itself, a fact which increases its terrible associations. When they are seen, it is almost invariably after they have been captured.
At night, however, and particularly in the hot season, it becomes phosphorescent. These horrible creatures have their passions; their submarine nuptials. Then it adorns itself, burns and illumines; and from the height of some rock, it may be seen in the deep obscurity of the waves below, expanding with a pale irradiation—a spectral sun.
The devil-fish not only swims, it walks. It is partly fish, partly reptile. It crawls upon the bed of the sea. At these times, it makes use of its eight feelers, and creeps along in the fashion of a species of swift-moving caterpillar.
It has no blood, no bones, no flesh. It is soft and flabby; a skin with nothing inside. Its eight tentacles may be turned inside out like the fingers of a glove.
It has a single orifice in the centre of its radii, which appears at first to be neither the vent nor the mouth. It is, in fact, both one and the other. The orifice performs a double function. The entire creature is cold.
The jelly-fish of the Mediterranean is repulsive. Contact with that animated gelatinous substance which envelopes the bather, in which the hands sink, and the nails scratch ineffectively; which can be torn without killing it, and which can be plucked off without entirely removing it—that fluid and yet tenacious creature which slips through the fingers, is disgusting; but no horror can equal the sudden apparition of the devil-fish, that Medusa with its eight serpents.
No grasp is like the sudden strain of the cephaloptera.