Wade into wonder
The calm surface of the Grand River hides a bustling ecosystem filled with colorful creatures, fascinating discoveries and important clues about water quality.

Lake Metroparks’ annual River Jamboree: Invertebrate Immersion event, which takes place Sunday, July 12 from noon to 3 p.m. at Hidden Valley Park, is the perfect naturalist-led opportunity for adventure within the Grand River.
Ever wonder what might be living beneath the surface of the local rivers and streams you often walk by? Things might appear calm and placid viewed from the bank, but step a little closer—better yet, wade right in—and you’ll discover a fascinating underwater world teeming with life.
Mimi caught up with Lake Metroparks Naturalist Abby Mossbruger for guidance on rolling up your pantlegs, grabbing a net and becoming an underwater explorer. She reports the annual River Jamboree: Invertebrate Immersion event, which takes place Sunday, July 12 from noon to 3 p.m. at Hidden Valley Park, is the perfect naturalist-led opportunity for adventure within the Grand River.
What’s an invertebrate? Any animal that lacks a backbone. Fun fact: This highly diverse group makes up more than 90% of described animal species on earth.
“Pairing up with a naturalist helps in the discovery process, uncovering dramatic biodiverse invertebrates you may otherwise overlook, such as insects, spiders, reptiles, snails and worms,” Abby says.
A naturalist can help point out dramatic predators like dragonflies and damselflies, both of which shimmer with vibrant iridescent colors. You’ll probably spot a striking ebony jewelwing damselfly along the river’s edge.
“It’s important to connect with these animals, as their habitats are a key indicator to how healthy the ecosystem is,” she adds. “A healthy, thriving population is directly connected to water quality. Many species are highly sensitive to things like pollution and act like the ‘canary in the coal mine.’ Naturalists will help you scoop, sift and identify the findings. A ‘catch of the day’ board will help track discoveries.”
After years as a naturalist, Abby says that her personal favorite part of the job is that “No two trips into the river are the same. Every visit brings a surprise.”
Lake Metroparks provides more than 4 million visitors each year with educational and recreational programs. River Jamboree is a free event that takes place at the south end of Hidden Valley Park, 4872 Klasen Road in Madison Township. No registration needed; nets are first-come, first-served. For more information, visit LakeMetroparks.com.
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