Southern Ocean "objects of interest".
We have seen low-resolution satellite images of objects in the sea, reported to be around 25m long.
Given the sensitivity of surveillance techniques, we do not know the origin of the data or if other images are available, in the visual spectrum or via radar.
What someone COULD perhaps release is whether these objects have been detected by more than one satellite or during more than one pass of a satellite over this area.
If they have been seen only by a single satellite in a single pass, then their potential significance is greatly diminished.
There is obviously a lot of junk floating around the world's oceans.