Fig. 1. The extensive tubeworm roots of an aggregation that was excavated and collected using the Bushmaster sampling device (Bergquist et al., 2002; Cordes et al., 2005b). This photograph shows roots that are about 1 m long, extending below the carbonate rock substrate. The roots were observed to break during collection and we believe they might have been even longer in the intact aggregation (C.R.F., personal observation). Photo courtesy of Dr E. E. Cordes.