Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

What's the animal that swims upstream? Help your child figure this out with this cold-blooded animal crossword puzzle worksheet.

Use your knowledge of sea creatures to fill out this crossword puzzle.

Learn all about the different jellyfish and then test your knowledge with the questions at the bottom of the page.

Classify the animals in this life sciences matching worksheet!