Mine will sometimes go weeks buried in the sand. No idea why. Sometimes she'll poke one eye stalk up to look around. Most of the time she's cruising around the tank vacuuming.
If I recall, mine may have stayed buried more when she was new to the tank. So it might be new environment cautiousness.
If I recall, mine may have stayed buried more when she was new to the tank. So it might be new environment cautiousness.