I visited Shiretoko this past summer vacation. It is beautiful. Stayed at a crowded, but cheap campsite in Utoro. Not to be missed are the hotsprings kamuiwakka and Iwaobetsu. Both are incredible. Rausu hotspring is unbearably hot. Also the 5 lakes of Shiretoko are amazing especially on a sunny day when you can see the reflection of the mountain range. Wild deer are everywhere. If you have the energy, the hike up to Mt. Rausu is very nice. Stunning views. Overall a really great place with so much wildlife. I highly recommend Shiretoko.