There has been some discussion about whether the methane lakes on Titan could harbor life. What I haven't seen discussed is the potential for life in Earth's methane lakes. There are many underground reservoir's on Earth that contain light hydrocarbons such as methane. If I'm not mistaken, the methane is under pressure and should be in liquid form. I suppose no one has preserved methane in its natural liquid state and put it under a microscope. Has no one looked for life in crude oil? I realize no one knows what to look for as radically different life forms might not have DNA. Still, there been so little discussion on this.