. Ocean wonders: a companion for the seaside. n Teouble (Limulus polypkemus). specimens can be obtained among the rocks and sea-weed at 218 THE OCEAN. low tide. If well, the hermit-crab is full of life and activity,he runs along the bottom of the tank, and climbs the rocks,if there are any, with surprising rapidity. The whole race,however, belongs to the fighting brigade. Just watchhim ! He is also a good scavenger. Do not use the fiddler-crab, for he is not wholly an aquatic animal; if you shuthim up in your tank, he will revenge himself on you bydying and thus causing trouble. The common edi
. Ocean wonders: a companion for the seaside. n Teouble (Limulus polypkemus). specimens can be obtained among the rocks and sea-weed at 218 THE OCEAN. low tide. If well, the hermit-crab is full of life and activity,he runs along the bottom of the tank, and climbs the rocks,if there are any, with surprising rapidity. The whole race,however, belongs to the fighting brigade. Just watchhim ! He is also a good scavenger. Do not use the fiddler-crab, for he is not wholly an aquatic animal; if you shuthim up in your tank, he will revenge himself on you bydying and thus causing trouble. The common edible orblue crab, if very small, may be introduced with small lady or land crab, and the modest rock-crab,are acquisitions, being good-natured and harmless. Andlast, but not least, procure a few of those interesting littlehorseshoe - crabs (Polyphemus Americcmus); they may befound half covered with sand on Coney Island. The common sand or silver shrimp lives well in the aqua-rium, and is one of the most graceful creatures Common Shrimp {Crangon vulgaris). Remember that all Crustacea need feeding regularly; a smallpiece of raw meat, cut fine, suits them as well as anything. ZOOPHYTES. Here we enter into the exclusive domain of the salt-wateraquaria, and upon the class of objects most difficult to ob- MARINE AND FRESH-WATER AQUARIA. 219 tain. First of this class are the Actiniae or sea-anemones,described in Chapter II. They are properly called flower-shaped animals, thongh it was long doubted whether theywere animals. There is a certain class of sea-anemones whichcan be obtained among the rocks when the tide is out, butonly a practised eye would detect them; for, though theywill be in full bloom when covered by the water, when de-serted by the friendly wave they look only like slimy accu-mulations upon the rock. But when you have once learnedto recognize them, there is no further difficulty—exceptto get them. This is not always a very easy matter, andpracti
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