The adults lay their eggs in vertical burrows in the soil beneath carcasses.

Changes from Skolithos-dominated facies to wide diversity and abundance, including vertical and horizontal burrows, and huge arthropod trackways.

This species excavates elaborate vertical burrows up to 90 cm long in the sea bed.

They inhabit vertical burrows in these soft sediments with the anterior end facing up and slightly exposed at the sediment surface.

A few centimeters below its thin, wafer-like door, the vertical burrow narrows abruptly.

They use this to clog the entrance of their 7 to 15 cm deep vertical burrows when threatened, a phenomenon called phragmosis.

The vertical burrows indicate that worm-like animals acquired new behaviours, and possibly new physical capabilities.

It excavates short, vertical burrows in sandy substrate once the prey has been caught.

They feed, mostly on seeds, at night and shelter in deep vertical burrows.

Eggs hatch in mid-August, and the larvae dig vertical burrows where they secure themselves using hooks along their abdomen.