What fascinates you?
It can be anything...but please take this seriously...I want to know what really catches your eye. It can be anything but if I get even a hint that you're not posting a serious answer here then I'll have a good complain to the mods 🙂
I'm completely enthralled with Deep Sea Marine Life. Its just the prospect that we can glimpse at our planets past by looking a few thousand feet to the deep dark recesses of our oceans and water bodies.