Fish Activities

Underwater Egg Investigation

During the spring, certain animals lay eggs in ponds near your house. With a little underwater egg investigation, you can watch these eggs turn into animals over time.

What You'll Need:

  • Frog, salamander, toad, or snail eggs
  • Shallow pan
  • Water
  • Magnifying glass

How to Create an Underwater Egg Investigation:

Step 1: In the spring, hunt around the edges of ponds in your area to look for the jellylike eggs of frogs, salamanders, and toads. Salamander eggs lie in stiff masses, often with green algae living inside the jelly. Frog and toad eggs may be laid in strings or soft masses.

Step 2: Pull some loose leaves out of the water; you may find small blobs containing snail eggs on the undersides of submerged leaves. If you have an aquarium with snails, look for their eggs, too.

Step 3: When you find eggs, put them in a shallow pan with some water and have a look. Use your magnifying glass to observe them. Freshly laid eggs will have little for you to see, but older eggs will have tiny tadpoles inside them. Snail eggs will have tiny white embryonic snails moving slowly inside.

Step 4: Put the eggs back in the water and mark the spot where you found them.

Step 5: Return once a week and check the progress of the eggs. See how long it takes for the tadpoles or baby snails to hatch. Don't take the eggs home in a jar to watch. It's best to leave the eggs in their natural setting, where they will be at the correct temperature and will receive plenty of oxygen. The eggs will suffocate in a confined jar.

Now that you see where fish come from, keep reading to learn how to construct print designs of these scaly creatures.

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