Urban ponds are paradise for aquatic life in the middle of the hustle and bustle of a city. In Finland, ponds are defined as freshwater bodies with diameter less than 200 meters, although there is no clear-cut distinction between the definition of ponds and small lakes. There are over a hundred urban ponds in the capital region of Finland. Many aquatic organisms, such as frogs and aquatic insects, thrive in these urban ponds. Diving beetles are also a common sight in urban ponds.