SPREE HQ Summer Camp Week 10: Underwater Investigators

Campers took a peek under the River’s surface and discovered the secret lives of the plants and animals that live there. They found the crawdads, clams, and many other creatures that call our urban waterways home!
Monday: Plants and Macroinvertebrates
The mission for our SPREE campers this week was to become underwater investigators of the waterways of Denver. We started the week by looking at some underwater plants and tiny animals. The tiny animals are called aquatic macroinvertebrates. We first helped campers break down the words.  Aquatic = water, Macro = big enough to see with the naked eye, Invertebrate = no backbone. The creatures we learned about throughout the week live in the water, don’t have a backbone, and can be seen without a microscope. In our waterways, we frequently see two types of macros- ones that evolve, and ones that do not. Today, we focused on macros that don't evolve. First, we learned about clams! We have some in Denver- they are filter feeders that even help filter and clean the water that they live in! We also learned about leeches and aquatic worms. They also don't evolve, but still play key roles in the river ecosystem! We played a leech game to learn about how they move and communicate in the water. Then, we got to explore in the creek and catch some of these critters and learn about them hands-on!
Next, campers learned about some different types of water plants. We learned about three types: emergent, that grow from the bottom of the water and stick out of the surface; floating, which live on top of the water's surface; and submergent, plants that live exclusively underwater.  We acted out the different plant types and made a craft diorama of the different plants living in the water.

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