Photographer Sirli Raitma captured these deer in the fog in Richmond Park in the UK. "There is always a sense of mystery," she says of the park. "You never know what you'll get." Her photos certainly portray such mystery; the combination of delicate deer and an elusive mist leave you wondering. "I don't think they hear me. If they do, it doesn't seem to alter what they're doing. I do try to keep very quiet -- the results are much better if the deer are just going about their normal business, undisturbed."