Paul Bertner / Flat Bug (Aradidae) trapped in water droplet, Mananara Nord National Park, Madagascar

Juergen Freund / Halligan Bay, where land meets water of the salt field and thousands of dead bugs, fish, rodents and birds are washed ashore. Lake Eyre, South Australia

Andy Sands / Long Water Measurer (Hydrometra stagnorum) drinking by piercing surface tension with mouthparts. Captive, UK, July.

Jan Hamrsky / Water Strider / Pond Skater (Gerris lacustris) portrait. Europe, August.

Jan Hamrsky / Needle Bug / Water Stick Insect (Ranatra linearis) portrait. Europe, August.

Terry Whittaker / 2020VISION / Swarm of Greenfly (winged aphids), Rutland Water, Rutland, UK, April. Photographer quote: 'It's quite difficult to take photographs with greenfly in your eyes, nose and ears!' Did you know? Although s...

Nick Upton / Common / Long Water Measurer (Hydrometra stagnorum) walking on stream surface, with reflections, Wiltshire, UK, April.

Stephen Dalton / Pond skaters (Gerris lacustris) on water surface with dead bee, England, UK

Wild Wonders of Europe / Radisics / Two Water measurers (Hydrometra lacustris) Lake Skadar, Lake Skadar National Park, Montenegro, May 2008

Jose B. Ruiz / Water boatman {Corixa punctata} under water surface, Pla de Xirau, Alicante, Spain

Ingo Arndt / Water Boatman (Notonecta glauca) with reflection underwater, a true bug of the Heteroptera suborder, Europe

Ingo Arndt / Pond Skater (Gerris sp) using surface tension to walk on water, a true bug of the Heteroptera suborder, Europe

Andy Sands / Water Boatman / Backswimmer (Notonecta glauca) at water surface with reflection. Captive

Nigel Cattlin / Giant water bugs (Lethocerus indicus) in plastic bag, at market. Bangkok, Thailand.

Marie Read / California Gull (Larus californicus), foraging for alkali flies (Ephydra hians) by running through swarm snapping its bill, on the shore at Mono Lake, California, USA. Digital frame expansion.

Piotr Naskrecki / Giant Water Bug (Diplonychus sp) male carrying eggs on back where they have been glued by a female, Gorongosa National Park, Mozambique

Piotr Naskrecki / Giant Water Bug (Lethocerus niloticus) feeding on fish prey, Gorongosa National Park, Mozambique

Jean E. Roche / Creeping water bugs (Naucoridae) Camargue, France, June.

Paul Bertner / Flat Bug (Aradidae) trapped in water droplet, Mananara Nord National Park, Madagascar

Paul Bertner / Flat Bug (Aradidae) trapped in water droplet, Mananara Nord National Park, Madagascar

Nick Garbutt / Synchronous fire flies (Pteroptyx sp.) mangroves along the Kinabatangan River, Sabah, Borneo.

Gerrit Vyn / Women selling water bugs in market at Mrauk-U, Rakhine State, Myanmar, 2012

Chien Lee / Fishing Spider (Dolomedes sp) feeding on Pond Skater (Gerridae) prey, Nabire, Papua, Indonesia

Jan Hamrsky / Water boatman (Sigara striata) Europe, September, controlled conditions

Jan Hamrsky / Water boatman (Sigara striata) Europe, September, controlled conditions

Jan Hamrsky / Needle bug nymph (Ranatra linearis) hidden in roots and waiting for prey, Europe, July, controlled conditions

Jan Hamrsky / Needle bug nymph (Ranatra linearis) head and front raptorial leg detail , Europe, July, controlled conditions

MYN / Joris van Alphen / Water stick insect (Rantara linearis), Picardie, France, May

MYN / Joris van Alphen / Water stick insect (Rantara linearis), Picardie, France, May

Juergen Freund / Dead insects, on the shores of Halligan Bay, when land meets water of the salt field thousands of dead bugs, fish, rodents and birds are washed ashore, Lake Eyre, South Australia

Juergen Freund / Dead insects, on the shores of Halligan Bay, where land meets water of the salt field. Thousands of dead bugs, fish, rodents and birds are washed ashore, Lake Eyre, South Australia

Jan Hamrsky / Water scorpion (Nepa cinerea) head and raptorial legs detail, Europe, May, controlled conditions

Jan Hamrsky / Water scorpion (Nepa cinerea) waiting for prey underwater while breathing atmospheric oxygen using its siphon, Europe, May, controlled conditions

Jan Hamrsky / Water scorpion (Nepa cinerea) breathing tube siphon detail, Europe, May, controlled conditions

Jan Hamrsky / Water scorpion (Nepa cinerea) waiting for prey underwater while breathing atmospheric oxygen using its siphon, Europe, May, controlled conditions

Jan Hamrsky / Water scorpion (Nepa cinerea) waiting for prey underwater while breathing atmospheric oxygen using its siphon, Europe, May, controlled conditions

Andy Sands / Long Water Measurer (Hydrometra stagnorum) male attempting to mate with female. Hertfordshire, England, UK.

Andy Sands / Long Water Measurer (Hydrometra stagnorum) walking on water using surface tension. Captive, UK, July.

Andy Sands / Sloe Bug (Dolycoris baccarum) on petal of evening primrose after shower of rain. Hertfordshire, England, UK, July.

Paul Hobson / Water Boatman / Common Backswimmer (Notonecta glauca) at water surface. Derbyshire, July.

Paul Hobson / Lesser Water Boatman (Corixa punctata). Sheffield, UK, July.

Paul Hobson / Water Boatman / Common Backswimmer (Notonecta glauca) at water surface. Derbyshire, July.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca) suspended beneath water surface. Czech Republic. Controlled conditions.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca) suspended beneath water surface. Czech Republic. Controlled conditions.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca) portrait showing compound eyes. Czech Republic. Controlled conditions.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca). Czech Republic. Controlled conditions.

Jan Hamrsky / Water Strider / Pond Skater (Gerris lacustris). Czech Republic. Controlled conditions.

Jan Hamrsky / Young Water Strider / Pond Skater (Gerris lacustris) feeding on mosquito. Czech Republic. Controlled conditions.

MYN / Niall Benvie / Common backswimmer / Water boatman (Notonecta glauca), Scotland, UK, April meetyourneighbours.net project

MYN / John Tiddy / Water scorpion / needle bug (Nepidae) underwater, Victoria, Australia, January. meetyourneighbours.net project

MYN / John Tiddy / Water scorpion / needle bug (Nepidae) underwater, Victoria, Australia, January. meetyourneighbours.net project

John Abbott / Broad-shouldered water striders (Rhagovelia sp) on water surface, Little Bee Creek, Texas, USA, October

Colin Varndell / Common Pond Skater / Water Strider (Gerris lacustris) on water. New Forest, UK, July.

Andy Sands / Water Stick Insect (Ranatra linearis) clinging to water lily stem underwater. Captive. UK, May.

Jan Hamrsky / Water Scorpion (Nepa cinerea) awaiting prey. Europe, July.

Jan Hamrsky / Water Scorpion (Nepa cinerea) portrait. Europe, July.

Jan Hamrsky / Water Scorpion (Nepa cinerea) with ant prey. Europe, July.

Jan Hamrsky / Water Scorpion (Nepa cinerea) with ant prey. Europe, July.

Jan Hamrsky / Water Scorpion (Nepa cinerea) grooming its tail. Europe, July.

Jan Hamrsky / Water Scorpion (Nepa cinerea) with small fish prey. Europe, July.

Jan Hamrsky / Water Scorpion (Nepa cinerea) portrait. Europe, July.

Jan Hamrsky / Water Strider / Pond Skater (Gerris lacustris). Europe, August.

Jan Hamrsky / Water Strider / Pond Skater (Gerris lacustris) with mosquito prey. Europe, August.

Jan Hamrsky / Water Strider / Pond Skater (Gerris lacustris). Europe, August.

Jan Hamrsky / Water Strider / Pond Skater (Gerris lacustris) with mosquito prey. Europe, August.

Jan Hamrsky / Needle Bug / Water Stick Insect (Ranatra linearis) awaiting prey. Europe, August.

Jan Hamrsky / Needle Bug / Water Stick Insect (Ranatra linearis) with ant prey. Europe, August.

Jan Hamrsky / Needle Bug / Water Stick Insect (Ranatra linearis) with ant prey. Europe, August.

Jan Hamrsky / Needle Bug / Water Stick Insect (Ranatra linearis) mimicking roots with ant prey. Europe, August.

Jan Hamrsky / Close-up of Backswimmner / Water Boatman (Notonecta glauca) 'oar' leg used for propulsion. Europe, August.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca) under water surface. Europe, September.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca) on stem. Europe, September.

Jan Hamrsky / Backswimmer / Water Boatman (Notonecta glauca) under water surface. Europe, September.

Terry Whittaker / 2020VISION / Swarm of Greenfly (winged aphids), Rutland Water, Rutland, UK, April

Terry Whittaker / 2020VISION / Young woman photographing swarm of Greenfly (winged aphids) Rutland Water, Rutland, UK, April 2011. Model released.

Terry Whittaker / 2020VISION / Swarm of Greenfly (winged aphids), Rutland Water, Rutland, UK, April

Terry Whittaker / 2020VISION / Swarm of Greenfly (winged aphids), Rutland Water, Rutland, UK, April

Terry Whittaker / 2020VISION / Swarm of Greenfly (winged aphids), Rutland Water, Rutland, UK, April

Terry Whittaker / 2020VISION / Swarm of Greenfly (winged aphids), Rutland Water, Rutland, UK, April

Stephen Dalton / Pygmy / Lesser backswimmer (Plea leachi)

Stephen Dalton / Backswimmer Water Boatman (Notonecta sp.) under water surface in upside-down posture, showing legs adapted to be swimming "oars". UK, October.

Stephen Dalton / Backswimmer Water Boatman (Notonecta sp.), showing legs adapted to be swimming "oars". UK, October.

Nick Upton / Pond skater / Water strider (Aquarius najas) pair in tandem, with male guarding female on the water surface of a mountain stream. Corsica, France, June.

Will Watson / The Lesser Water Boatman (Corixa punctata) resting on Soft Hornwort (Ceratophyllum submersum) in pond, captive, England.

Will Watson / Spotted Backswimmer (Notonecta maculata) on the back of the Common Backswimmer (Notonecta glauca) with Horned Pondweed (Zannichellia palustris) in pond, captive, England.

Will Watson / Spotted Backswimmer (Notonecta maculata) on Horned Pondweed (Zannichellia palustris) in pond, captive, England, UK

Will Watson / Common Backswimmer (Notonecta glauca) on Horned Pondweed (Zannichellia palustris), captive, UK.

Will Watson / Small Backswimmer (Notonecta viridis) on Soft Hornwort (Ceraptopyllum submersum), captive, England.

Will Watson / Common Backswimmer (Notonecta glauca) and the Spotted Backswimmer (Notonecta maculata) and Common / Wandering pond snail (Lymnaea peregra) on Horned Pondweed (Zannichelia palustris) captive, England,...

Nick Upton / Common / Long Water Measurer (Hydrometra stagnorum) on water surface, with Springtail prey impaled on its sucking rostrum. Wiltshire, UK, April.

Nick Upton / Pond Skater (Gerris lacustris) standing on water at edge of stream. Wiltshire, UK, April.

Robert Thompson / Water scorpion (Nepa cinerea) underwater, Montiaghs Moss NNR, County Antrim, Northern Ireland, UK, March

Stephen Dalton / Pond skater (Gerris lacustris) with insect prey, on water surface, UK

Stephen Dalton / Two Lesser water boatmen (Corixa punctata) on underwater vegetation, UK

Stephen Dalton / Water boatmen {Corixa sp) on water surface, UK

Wild Wonders of Europe / Radisics / Water measurer (Hydrometra lacustris) Lake Skadar, Lake Skadar National Park, Montenegro, May 2008