Among the commonest of fish in the shallow waters of the coast are the rays, of which there are many species--eighteen, according to the list prepared by Mr. J. Douglas Ogilby. Some attain enormous size, some display remarkable variations from the accepted type, and at least two are edible though not generally appreciated, for the hunger of the littoral Australian is not as a rule sufficiently speculative to prompt to gastronomic experiment, else food that other nations cherish would not be deemed unclean. Between sharks and rays relationship exists, for a certain ray has been sneered at as only a flattened-out shark. There are five species of shark-like rays, which have all the outward form and appearance and vagrant mode of life of their prototype, and four species of sharks that might pass as rays. One of them, with a big head, tadpole-like tail and generally frayed and sea-tattered appearance, is, in fact, accepted in some quarters as a ray, while the shovel-like skate is commonly regarded as a shark. The most delicately flavoured of the rays is known as the "blue-spotted" (DASYBATUS KUHLI). It does not appear to attain a large size, but it is fairly common, and is one of the most comely of the creatures of the coral reefs, the bright blue decorative blotches on a ground of old gold being most effective. It is often found in a few inches of water perfectly motionless, and on being disturbed flutters and glides away swiftly and with little apparent effort. Roasted on an open fire, when a large proportion of the pungent oil escapes, the flesh is pleasant, though possessing the distinctive flavour of the order, which is, however, acceptable at all times to the palate of the black. One of the formidable sting rays--dark brown in colour (probably DASYBATUS THETIDES, Ogilby), which revels on oysters--has the habit of burying itself in the mud, leaving an angular depression, corresponding to the size of the body, from which the pedestal eyes alone obtrude. In such position it is difficult for the inexperienced to detect the fish until by misadventure it is trodden on, in which circumstance one of two manoeuvres is adopted. Either it flaps and flounders in the slush so that the intruder is startled and jumps clear, or else it lashes out with its whip-like tail in the endeavour to bring into play its serrated weapon, charged with pain, and fearsome on account of the blood-poisoning effect of the mucus with which it is coated.