Here you can see the entrance to a burrow. Fiddler burrows draw oxygen into the soil, enhancing growth and encouraging deeper Spartina grass roots that stablize the marsh. The burrows may be up to two feet deep and with each high tide the Fiddlers wait nice and dry behind a plug of mud until the tide recedes. In the winter the Fiddlers remain in their burrows in a type of hibernation (although they may emerge on warm sunny days), but with the return of warm weather they resume their “March on the Marsh.”