Looks like a black sphere not a black hole to me.
The black sphere is not the black hole, it's the "event horizon" that surrounds the black hole.
The actual black hole is - well, no one knows for sure, but - probably much smaller than the event horizon. In fact, some people think the black hole itself may be smaller than a proton, but weigh 12 billion times as much as the sun.
The sphere is a representation of the event horizon. The hole itself is 0 volume and infinite mass within our space.
It is an artistic rendering....