The deepest free dive by a man was 702 feet, but a submersible record has been around 35,000 feet. Thus 12,000 feet should be extremely doable to get actual photographs or even video.
I assume what we are seeing is some sort representation of it, rather than being an exacting image of it. Let's get some detailed images. Would be more interesting. I'll bet it's not nearly as symmetrical as it appears to be with whatever it is we are seeing. That was the point of my post.
I am sure that the oceanographers are planning to do just that, explore it with a submersible as soon as they can possibly get the time and funding to do so.................