dew worm images - Joel Sartore

Wild nightcrawlers (Lumbricus terrestris) caught in Lincoln, Nebraska. These are considered an invasive species in the United States.

Wild nightcrawlers (Lumbricus terrestris) caught in Lincoln, Nebraska. These are considered an invasive species in the United States.

Wild nightcrawlers (Lumbricus terrestris) caught in Lincoln, Nebraska. These are considered an invasive species in the United States.

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National Geographic Photographer and Speaker