Instructions
Clear beach debris in "Virtual Villagers 1: A New Home." Once you have earned enough tech points to reach Farming Level 3, assign a villager to clean debris from the beach. You might have to drag your villager there a few times until he "learns" how to do this task without supervision. Once the beach is cleared, villagers can be dragged into the water, where they will eventually learn how to fish (with your guidance, of course).
Clean up the algae in "Virtual Villagers 2: The Lost Children." Villagers can fish at first, but the ocean soon becomes clogged with algae. To clean up the fishing grounds, you first must be at Farming Level 3 and have a Master Scientist or a Master Farmer. Take one of these masters to the pond, where she will learn to catch algae-eating fish and take them to the ocean. After a number of algae-eating fish have been transported, the ocean will be clean and fishing can commence again.
Get rid of the sharks in "Virtual Villagers 3: The Secret City." This time dangerous sharks keep your villagers from fishing. You will need a magic potion to get rid of the sharks. Potions are created in the alchemy lab (you must solve another puzzle to restore the lab). You also we need to have reached Nature Level 2 or Magic Level 2 to find the correct ingredients. If you are using the Magic option, combine one Berry and two Roses. For the Nature option, use one Pitcher Plant and two Black Orchids. Once made, villagers will carry the potion to the sea and the sharks will vanish.
Make fishing nets in "Virtual Villagers 4: Tree of Life." You can see fish leaping in the water when you start the game, but they move too quickly for villagers to catch them. First, have builders repair the piers (this can be done at any point in the game). To make fishing nets, you must first have mastered the technology of creating cloth (Puzzle 8) and have achieved Level 2 in construction. Once you have at least six bolts of cloth, builders will start to make the nets if you drag them to the piers. Once the nets are complete, farming villagers can be dragged onto them to collect fish.