In a given population most individuals do not have wings, some have partially developed wings and a few possess fully developed wings. They have the ability to leap a short distance into the air to catch small flying insects. Not all their time is spent on the water surface. Some species can leave the water, walking on the shore or resting on rocks and other objects. In response to adverse conditions, some adults can fly to new habitats.
Water striders are highly predaceous, feeding on a variety of aquatic insects.
Foreleg hairs are sensitive to surface vibrations, allowing them to detect the location of potential prey. Once captured the prey is held in the forelegs and a digestive enzyme is injected. After the prey's body contents are dissolved, the water strider sucks it dry.