The squids range in size from gigantic specimens seventy or more feet in length to the minute Cranchia, which is luminous at times. Some have no tails, some only the suggestion of a tail, some have very pointed ones, some very broad ones. In specimens of the little Cranchia which I observed the head was very small and the body long in proportion. One form appears to have side winglike fins. The large squids live in the deep sea, and most of the specimens known have been taken from the deep fjords of Newfoundland, which appears to be a favorite locality for them. They doubtless live everywhere in the deep seas, as they are almost invariably found in the stomach of the sperm whale, evidently constituting a favorite food of this giant-toothed whale. The squids live mainly upon fishes, and are very skillful in taking them, poising like a cat, near the bottom, creeping upon a school of sardines,--all the time simulating the color of the bottom, and almost invisible but for their large, dark eyes standing out,--then suddenly darting tail first into the school, flinging the long arms at the flying fishes, and almost always catching one, which is dragged up to the parrotlike bill and dismembered. In the six and seven foot squids taken at Santa Catalina the stomachs were filled with seaweed, showing that at least some of these animals are vegetarians. On all tropical shores is found a beautiful coiled shell, the Spirula, with little pearly septa dividing it. I have seen a windrow of these shells a mile long, but never found the animal and shell together, so easily are they disconnected. It is the smallest and the most beautiful of all the cephalopods. [Illustration: FIG. 122.--Octopus or devilfish.]