On building a worm detector

The next frontier in worm research is to be able to visualise (map) the locations of worms, in-situ, and if possible, at the paddock scale. We know so much more about the movements of ants, spiders, beetles, bees/pollinators and the above ground invertebrates. Yet so little about everything below ground. Frankly its a blight on us all we don't know more. Okay maybe that's a bit dramatic, but for a group of organisms that are so important to soil fertility and health, we know so little about their movements specifically. Don't get me wrong, many studies have sampled worms out in the field. So we do know about their abundance and diversity in a broad range of ecosystems, especially within agricultural landscapes. But it's the movement of these worms, both individually and collectively that I wish to understand more. To research this we would have to make some sort of worm detector. Being able to map, not just of one species, but a community of worms in a paddock would be highly valuable…