Dragonflies above and below the water

Dragonflies are insects with large eyes, elongated bodies, and two pairs of wings. Their quick turns and hovering flight make the adults noticeable around ponds, rivers, and wetlands. However, the flying stage does not describe their entire lives. Young dragonflies develop in water, where their appearance and movement are quite different from those of the adults seen above the surface.

The aquatic young are often called nymphs. They feed on other small animals and use the features of their watery surroundings for shelter and movement. Vegetation, sediment, water depth, and local conditions can influence the places they occupy. Their presence connects the later flying adults with habitats that may be hidden from a person observing only the air above a pond.

At the transition to adulthood, a mature nymph leaves the water and the winged insect emerges from its outer covering. The empty covering may remain attached to a stem or another support. This visible remnant can be found even when no adult is nearby. It provides evidence that development took place locally rather than showing only that a flying insect happened to pass through the area.

Adult dragonflies hunt other insects and use different flight patterns while feeding, resting, or interacting. Some spend considerable time on a perch, while others remain in the air for longer periods. Their movements are influenced by weather, light, and the availability of prey. A sunny interval can reveal activity that was not obvious during cooler or cloudier conditions at the same location.

Watching dragonflies involves looking at both the water and the surrounding vegetation. Perches, sheltered edges, and open spaces each provide different opportunities. Colour and wing markings can help distinguish species, while behaviour adds further information. Following the connection between the aquatic and aerial stages gives a fuller view of these insects and shows how a small body of water can support activity extending well beyond its visible shoreline. A record made at different times of day can reveal when resting insects become active and return to their usual perches.