Worm cast

This article is about a structure created by worms. For information about worm castings (excretion) used in gardening, see vermicompost.

A worm cast is a structure created by worms, typically on soils such as those on beaches^[1][2] that gives the appearance of multiple worms. They are also used to trace the location of one or more worms.

Lugworm cast, Red Wharf Bay, Isle of Anglesey