This
is what a sunspot looks like close up. In fact there are two sunspots in
this picture. You can also see the
granules
of the Sun's photosphere all around it.
Finally did you know that water had been found in sunspots? Well obviously not the liquid form that we get here on Earth, because sunspot temperatures are about 3,400 oC, clearly well above the boiling point of water in a kettle. However, in 1995, scientists found signs of water vapour, or steam, in dark sunspots.
It is possible that the water in sunspots causes a sort of "solar greenhouse effect", like the one talked about in the news for the Earth, that reduces the sunspot's energy output - making them colder than their surroundings. This is one thing that solar physicists are still working on, though, and so we don't yet know this for sure.