Occasionally, my people need to lie low for a few years. If we intentionally drown ourselves in a bog or mud, sometimes we encyst. It's risky, but good if your chances for survival are already less than fifty/fifty.
We think it's an old adaptation for surviving dry periods, like the lungfish you guys have on earth. Either way, it's how I was able to survive the trip here without cold sleep.
How did they wake you up? Water? More oxygen?
It was a more modern survival adaptation. I woke up the moment I felt someone pulling on my wallet.