春採湖 / Lake Harutori

春採湖（位於釧路市）是位在住宅區內的湖泊，範圍約4.7km。湖泊水深約5km，以天然紀念物-緋鯽魚的棲息地而為人所知。可以看到連接河川與海洋的鹹水湖獨特的生態系。此外，有130種以上的鳥類棲息在這裡。湖畔旁邊也有設置觀察野鳥的小屋。大概是從12月到4月之間湖面會結冰。

Lake Harutori (Kushiro City) is unique in that it is surrounded by a residential area of the city. It’s 4.7 kilometers around and the average depth is 5 meters. The lake is known as a spot where the Hibuna (common goldfish in English) live. As it’s connected to the sea via a small river, it’s a brackish-water lake. There are many creatures in the lake, and more than 130 kinds of birds visit over the year. There are huts to enjoy bird-watching. Usually, the surface of the lake freezes over from December to April. The state of the water in the lake had deteriorated, and a program to return it to it’s original, clean state was begun 20 years ago.