Polar Color Photographer Alexander Semenov shoots rare creatures found in the White Sea, northwest of Russia. This underwater slug is just one of the many (all incredible) shots you can browse through at Semenov's site. Alexander Semenov
We've got a delightfully plant-and-animal-heavy Images roundup for you this week, like newly rediscovered monkeys, unbelievably beautiful polar invertebrates (above), gorgeous orchids, and more. Of course, there are also some pretty space pics, because we love them, and you love them, and everyone else loves them, and a whole lot more.
Click to launch this week's Images of the Week gallery.