Behavior

Digs U- or J-shaped burrow ranging from 7.8-15.7 in (20-40 cm) deep that has a depression at the head end and small amount of defecated material at the tail end; this defecated material has the color of clean sand. Feeding, defecation, and burrow irrigation behavior is cyclic and can last from 15-42 minutes, depending on the size of the animal. The burrow is irrigated and consequently aerated by intermittent cycles of peristaltic contractions of the body from the tail to the head end. Therefore, concentrated oxygenated water is taken in at the tail end and leaves by percolation through the feeding column.

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