Think of a crab decorating himself with bright-colored sea-weed, so that he is called the dandy-crab! Still, he is not so vain, after all, as he covers himself with sea-weed that he may escape the sharp eyes and sharp teeth of hungry fishes. I once had a dandy-crab whose back I had scrubbed clean, after which I placed him in an aquarium containing a plain sand bottom. In this tank I also placed a hungry black-fish, who soon took a nip at him, securing only one of his legs. This so frightened the dandy-crab that he began searching over the aquarium for material to cover himself with. In the tank I placed several sea-flowers (anemones), cut into small pieces. These he immediately seized, and soon had them fastened over his back, using both claws, he being both right and left handed, and sticking them on with a kind of glue that he took from his mouth. In a few days the pieces of sea-flowers began to develop into perfect flowers, causing the crab to look very gorgeous. When a crab loses a claw, he does not mind it; in fact, he rather likes it, as it provides him with an extra meal. All he does is to sit right down and bite it off to the next perfect joint, eating the fragments of flesh with much relish. In a week's time a new claw begins to grow. When a spider-crab grows too large for his clothes, he rips them at the back, and out he slides, a helpless soft mass. He is now a "soft crab," and for thirty-six hours he has to hide away, as all fish are hunting for soft-crab dinners. At the end of thirty-six hours he is hard again, and has increased one-third in size. [Illustration: SWELL-FISH.] Of all laughable fish a baby swell-fish is the funniest. Beautiful in color, odd in shape, with the power of blowing himself up into a round ball covered on the under side with spines, does he not look wise and important? And he has only two teeth, but can't he bite? Why he swells himself up so is not exactly known; but I imagine that when he finds himself inside of a fish, he makes it so uncomfortable for that fish's general health that the fish is glad to get rid of him. [Illustration: SEA-ROBIN.] Next to a young swell-fish comes a young sea-robin, a very interesting fish. He can make a musical grunting noise when he feels good, and will spread his beautiful wings, and sail through the water as proud as a peacock. When he is tired, he likes to bury himself up to his eyes in sand, for which he uses his two curious hooked fingers. He also uses these to dig out the sand-shrimps. Some years ago great numbers of very large sea-robins visited our coast, and were sold in the New York markets under the name of Dolly Vardens, on account of their possessing such bright and showy colors. [Illustration: OYSTER DRILL.]