I just went and checked on my D. adelae this morning and saw this floating in the water.
It's not connected by roots or anything underneath the pot... Also, I noticed lots of little gnats or something like gnats crawling in there, lots stuck to leaves. I only have tiny sundews in this little pot, because the mama plant died from sun, but these little guys started growing in the shade.
So how the heck could this happen? Is the only explanation that a critter came and knocked it out of the pot, into the water?