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doi: 10.1038/041297a0
I CAN corroborate Mr. Ernest Weiss's remarks on the use of the modified legs of Dromia. A small one I had in an aquarium would, when the sponge was removed from the back, hunt about until it found something—a shell, a pebble, or even a dead fish—to replace the sponge. When there was nothing in the aquarium which it could seize, it was evidently in an unhappy condition.
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