Hallowe’en is a time when thoughts turn to evil spirits, vampires and other fantastical beings… but there are plenty of scary creatures out there who want to drink your blood for real! Our collection presents some of Nature’s Vampires doing what they do best. This rogue’s gallery takes in ticks, mosquitoes, leeches and horseflies, all of whom like nothing more than nice hot blood straight from the victim. But perhaps the most amazing sucker here is the aptly-named Vampyrella, a tiny beast that’s in the nightmares of all aquatic algae – they approach, latch on and literally suck the life out of the luckless cells. Sleep well!. See the slideshow.