The Sea-horses are found abundantly in the English Channel, around the coasts of France and Spain, in the Mediterranean Sea, and in the tropical oceans. A goodly number of different species are known to zoologists, but they all resemble one another in the essential features just noted. They are intelligent lively little creatures, learning in time to know the hand that feeds them. Fixed by their tails, they may be seen actively to dart the head at any passing object adapted for food. Whilst, when they wish to free their bodies from the attached position, they appear to manœuvre with the chin and head in order to effect their purpose. Their food appears to consist of small crustaceans, worms, and others of their marine neighbours, and they are known to be especially fond of such delicate tit-bits as are afforded by the eggs of other fishes. Perhaps the most curious part of the history of the Sea-horses relates to their care of the young. Fishes generally take little or no care of their offspring, and it is therefore the more surprising to encounter in the little beings before us, a singular example of parental fidelity and attachment. Nor, as might be expected, is it the mother-fish who is charged with the task of attending the young. Contrary to the general rule, the male fish assumes the part of nurse, and well and faithfully does he appear to discharge his duties. At the root of the tail in the male Sea-horses, a curious little pouch is seen. In this pouch the eggs laid by the females--which do not possess a pouch--are deposited, and are therein duly hatched. Nor does the parental duty end here; for after the young are hatched and swim about by themselves, they seek refuge in the pouch during the early or infantile period of their life whenever danger threatens them. This procedure forcibly reminds one of the analogous habits of the kangaroos and their young; but the occurrence is the more remarkable in the lower and presumably less intelligent fish. Some experiments made on Sea-horses seem to demonstrate the existence of a more than ordinary degree of attachment to their young. Thus when a parent-fish was taken out of the water, the young escaped from the pouch; but on the parent being held over the side of the boat, the young at once swam towards him, and re-entered the pouch without hesitation. Some authorities have not hesitated to express an opinion that the young are nourished within the pocket by some fluid or secretion from the pouch itself. But further observation is certainly necessary before this latter opinion can be relied upon.