Burrowing pattern and its variation with different kinds of substratum in the Chilean sipunculan Themiste hennahi Gray 1828 (syn. Dendrostomum peruvianum Collin 1892)

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith