Aquatic Critters
Water Bugs

Giant Water BugThe largest of the water insects is the giant water bug, which can reach a size of close to 3 inches (7.5 cm) in length and is brown. They are oval in shape, with wide, flat bodies. Before diving below the surface of the water, the giant water bug captures a bubble of air which it takes underwater and uses for oxygen. Once the bubble is used up, the bug needs to rise again to the surface to capture more air. The giant water bug is a predator, feeding on insect larvae, tadpoles, and small frogs and fish. They have a strong bite. 
Water ScorpionThe water scorpion is found in ponds and other still waters. They can be found hanging in the vegetation near the surface. Like the giant water bug, they are predators with front legs designed for grasping prey. They eat insect larvae. Unseen in this picture are their two long filaments that look like a tail that might sting, but they are actually tubes that they breathe through, like a snorkel tube. 
Water StriderWater striders are found on the surface of still and slow moving waters. They glide over the water, using their long spiderlike legs with waxy hairs on the tip to stay on top of the water surface. They eat aquatic insects. 
Water BoatmanWater boatmen are the most common of the aquatic bugs. They are identified by their oarlike hind legs which they use to propel themselves through the water. They occur in the vegetation and on the bottom of ponds, where they eat small water organisms, algae, plankton and detritus. They dive underwater with a film of air covering their body, so they can breathe. This enables them to stay underwater for a long period of time. They can also fly. 
Backswimmer A backswimmer looks very much like a water boatman, but they can be told apart by the fact that they swim on their backs. They prey on other aquatic insects and can bite. 
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