Wisconsin's Water Library has many lists of great books for children on a whole long list of water-related topics from fish to oceans to the Great Lakes. Check out our long list of topics for some ideas:
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For the littlest ones, there are some great ABC or counting books for read aloud fun.
For the older child, the library has a long list of books about great explorers, scientists and others that work in the world of water.
And you are never too old or too young to read a [fish] tale.
Happy holidays!