Tiny animal carcasses found in buried Antarctic lake

The tardigrades in question are actually *land* critters. Scientists speculate that during warm periods 10,000 or 120,000 years ago, when the Antarctic glacier they drilled a kilometer through was not there, the tardigrades had washed into a lake, which then froze over. The glacier then moved in and grew increasingly thick. The lake itself isn’t frozen solid, and does have seemingly living bacteria in it. The tardigrades do not seem to have been living in the lake, but are ancient remains. Nothing more advanced than bacteria is expected to be alive in those conditions.