The pic that looks there is a delta type system of rivers or streams flowing toward a shore was taken at 10 miles high. Speculation was that the featureless area could be a lake or ocean of liquid methane.

They mentioned that high altitude a sonar reading revealed an echo of possible vapor in clouds.

A 20th of a second force reading of the pentameter (sp) the sensor that first touched Titan's surface at landing showed there might have been a crust with soft clay like interior. It could be a type of ice/snow too.

Most of it was speculation like thoughts of methane rain and bodys of liquid methane, the real science is yet to come as you can imagine.

PS. I shouldn't have used water but liquid instead when describing the landing in the previous post. Hey, I was excited. ;-) And still am!