Crayfish

Crayfish, crawfish, or crawdads are freshwater crustaceans resembling small lobsters, to which they are related. They breathe through feather-like gills and are found in bodies of water that do not freeze to the bottom; they are also mostly found in brooks and streams where there is fresh water running, and which have shelter against predators. This disscetion of a crayfish shows the following: (b) brain, (h) heart, (i) intestine, (k) kidney, (l) liver, (n) nerve cord, (r) reproductive organ, (s) stomach.

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