Hexapods and water : an introduction to aquatic insects and collembolans -- General classifications of water bodies inhabited by hexapods -- Life on the surface tension -- Herbivorous insects on aquatic plants -- Hexapods on the roots and rhizoids beneath the pseudoterrestrium -- Active submerged hunters of microorganisms and small prey in lentic water -- Insects that construct underwater shelters -- Ambushes in streams -- Underwater tunnel-diggers, aquatic crickets, and swimming grasshoppers -- Insects inhabiting rainwater -- Hexapods in mosses and lichens -- Insects of phytotelmata -- Insect fauna living in insectivorous plants -- Aquatic hexapods active on ice and snow -- Adults that do not eat -- Life in water without oxygen -- Insects on the high seas -- Marine littoral hexapods -- Living in hypersaline water -- Petroleum flies -- Larvae that live in sponges -- Parasitoid larvae in aquatic insects -- Flies and other insects that eat snails -- Flies that give wedding presents -- Aquatic insects that kill people -- Insects that use people for bait -- Flies in hot water -- Ants and water -- What we still need to discover.