The Deep Blue Sea

A healthy world ocean is critical to our survival, but you don’t have to live near a teaming ocean to demonstrate how important all water is for every living thing. Help your children get their feet wet on a local level with a pond study.

When children use a hand lens or magnifying glass to get an up-close look at water samples, they’ll see their favorite swimming hole in a whole new light. For starters, you’ll need a small net. The kind you can get at the pet store for transferring fish from one home to another is perfect. You’ll also need a clear plastic bucket or another type of large, clear container; an eye dropper or a turkey baster (hands work too); and ice cube trays.

Prior to heading to the pond, talk with your children about where you will be going and any safety procedures they will need to follow. Dress for the experience: be sure the children have on old clothes that can get muddy.

leopard frogPonds are magnets for many kinds of animals. As you head out to the pond, you may be fortunate enough to glimpse some wildlife: perhaps a goose, muskrat or turtle. Encourage the students to observe the animal quietly. Ask them questions to help them observe the creature’s color, camouflage, movement, etc. How does this animal use the pond? At the pond site, ask questions about what they see, hear, and what kinds of critters they think might live in the water. How did the water get here and where might it go?

Before turning your children loose, demonstrate how they should get their nets down into the mucky leaf matter and detritus at the edge of a pond and scoop some of it into their nets. As they start collecting, they can dump the contents of their nets into the clear container, which should be filled with water from the pond. Let everything settle for a minute and then watch what happens.

macroinvertebrates
Students, over a period of seasons and years, watched the changes of the macro-invertebrates and the amount of sediment that floated within the water.

You should see lots of young insects, tadpoles and other macroinvertebrates moving around, including dragonfly, stonefly, and mayfly nymphs; crane fly and mosquito larvae; and predacious diving beetles. Have the children use an eye dropper, turkey baster, or even their hands to catch each critter and transfer them into their own section of the ice cube tray (also filled with water) so everyone can get a better look. When you’re done, make sure to release the creatures gently back into the water.

Pond Life (Golden Guide) is a great resource for identifying pond critters. You can also find a printable guide to most pond creatures here: pond critter identification.

This activity was developed as a more local version of Growing Up WILD’s “The Deep Blue Sea.” The accompanying healthy me, helping hands, art and music projects could be easily changed to fit in with Iowa’s freshwater ponds.

Explore the book search here on KinderNature for more pond resources. Do you need help locating a pond or pond study equipment? Your local naturalist is a great resource. Find your local naturalist at mycountyparks.com.