Critter Science
  • Zoology
    • Ecology
      • Animal Conservation
        • CITES: Protecting Wildlife
        • Endangered Animals
        • Ex Situ Explained
        • In Situ Explained
      • Ecosystems
        • The Biomes
      • Evolution. The Facts.
        • Animal Devolution
        • Arachnids – What are They?
        • Evolution of Amphibians
        • Evolution of Birds
        • Fish and Sharks
        • Natural Selection
        • Primate Language: The Debate
        • What is a Marsupial?
      • Predator vs Prey
      • Producers and Consumers
    • Sustainability
      • Climate Change
      • Global Warming
      • Pollution
        • Air Pollution
        • Land Pollution
        • Microplastics Pollution
        • Water Pollution
      • Recycling
      • Renewable Energy
    • Animal Behavioral Patterns
      • Types of Animal Dormancy
    • What are Species?
      • Amphibians vs Reptiles
      • Animal Reproduction
      • Claws, Nails, and Talons
      • Frogs vs Toads
      • Fur and Hair
      • Gecko Feet
      • Invasive Species
      • IUCN Statuses
      • The Enigmatic Purr
      • Venom vs Poison
      • What is a Marsupial?
    • About the Critterman
  • Daily Critter Facts
    • Amphibian Facts
      • Frog Facts
      • Newt Facts
      • Salamander Facts
      • Toad Facts
    • Arthropod Facts
      • Arachnid Facts
      • Insect Facts
    • Bird Facts
      • Flightless Bird Facts
      • Predatory Bird Facts
      • Scavenger Bird Facts
    • Cryptozoology
    • Fish Facts
      • Cephalopod Facts
      • Crustacean Facts
      • Jellyfish Facts
      • Reefs
      • Shark and Ray Facts
      • Shellfish Facts
    • Flying Mammal Facts
    • Gastropod Facts
    • Land Mammal Facts
      • Canine Facts
      • Feline Facts
      • Lagomorph Facts
      • Marsupial Facts
      • Primate Facts
      • Rodent Facts
      • Ungulate Facts
    • Parasite Facts
    • Reptile Facts
      • Crocodilian Facts
      • Lizard Facts
      • Snake Facts
      • Turtle Facts
    • Sea Mammal Facts
      • Dolphin Facts
      • Porpoise Facts
      • Sea Lion Facts
      • Seal Facts
      • Whale Facts
    • Worm Facts
  • For Teachers
    • Animal Quizzes
      • Amphibians Quiz
      • Bird Quiz
      • Cat Quiz
      • Dolphin Quiz
      • Insect Quiz
      • Reptile Quiz
    • Butterfly Life Cycle
      • Butterfly Metamorphosis
      • World’s Largest Butterfly
      • World’s Largest Moth
    • Metamorphosis – A Frog’s Life Cycle
    • The Cellular Structure of an Animal
    • Insect vs Bug
    • Animal Word Search
    • Coloring Pages
  • Study Guides
    • African Animals
    • Antarctica Animals
    • Asian Animals
    • Australian Animals
    • Central American Animals
    • European Animals
    • North American Animals
    • South American Animals
  • Diseases & Parasites
    • Bsal
    • Canine Distemper Virus (CDV)
    • Chronic Wasting Disease (CWD)
    • The Deadly Chytrid Fungus
    • All About Parasites
    • The Rabies Virus
    • White-Nose Syndrome
  • Contact
    • General Contact
    • Guest Article Submission
      • Guest Articles
        • Guest Articles – 2024
    • What Critter is This?
    • Animal Welfare Organizations
    • Privacy Policy
Subscribe
  • Zoology
    • Ecology
      • Animal Conservation
        • CITES: Protecting Wildlife
        • Endangered Animals
        • Ex Situ Explained
        • In Situ Explained
      • Ecosystems
        • The Biomes
      • Evolution. The Facts.
        • Animal Devolution
        • Arachnids – What are They?
        • Evolution of Amphibians
        • Evolution of Birds
        • Fish and Sharks
        • Natural Selection
        • Primate Language: The Debate
        • What is a Marsupial?
      • Predator vs Prey
      • Producers and Consumers
    • Sustainability
      • Climate Change
      • Global Warming
      • Pollution
        • Air Pollution
        • Land Pollution
        • Microplastics Pollution
        • Water Pollution
      • Recycling
      • Renewable Energy
    • Animal Behavioral Patterns
      • Types of Animal Dormancy
    • What are Species?
      • Amphibians vs Reptiles
      • Animal Reproduction
      • Claws, Nails, and Talons
      • Frogs vs Toads
      • Fur and Hair
      • Gecko Feet
      • Invasive Species
      • IUCN Statuses
      • The Enigmatic Purr
      • Venom vs Poison
      • What is a Marsupial?
    • About the Critterman
  • Daily Critter Facts
    • Amphibian Facts
      • Frog Facts
      • Newt Facts
      • Salamander Facts
      • Toad Facts
    • Arthropod Facts
      • Arachnid Facts
      • Insect Facts
    • Bird Facts
      • Flightless Bird Facts
      • Predatory Bird Facts
      • Scavenger Bird Facts
    • Cryptozoology
    • Fish Facts
      • Cephalopod Facts
      • Crustacean Facts
      • Jellyfish Facts
      • Reefs
      • Shark and Ray Facts
      • Shellfish Facts
    • Flying Mammal Facts
    • Gastropod Facts
    • Land Mammal Facts
      • Canine Facts
      • Feline Facts
      • Lagomorph Facts
      • Marsupial Facts
      • Primate Facts
      • Rodent Facts
      • Ungulate Facts
    • Parasite Facts
    • Reptile Facts
      • Crocodilian Facts
      • Lizard Facts
      • Snake Facts
      • Turtle Facts
    • Sea Mammal Facts
      • Dolphin Facts
      • Porpoise Facts
      • Sea Lion Facts
      • Seal Facts
      • Whale Facts
    • Worm Facts
  • For Teachers
    • Animal Quizzes
      • Amphibians Quiz
      • Bird Quiz
      • Cat Quiz
      • Dolphin Quiz
      • Insect Quiz
      • Reptile Quiz
    • Butterfly Life Cycle
      • Butterfly Metamorphosis
      • World’s Largest Butterfly
      • World’s Largest Moth
    • Metamorphosis – A Frog’s Life Cycle
    • The Cellular Structure of an Animal
    • Insect vs Bug
    • Animal Word Search
    • Coloring Pages
  • Study Guides
    • African Animals
    • Antarctica Animals
    • Asian Animals
    • Australian Animals
    • Central American Animals
    • European Animals
    • North American Animals
    • South American Animals
  • Diseases & Parasites
    • Bsal
    • Canine Distemper Virus (CDV)
    • Chronic Wasting Disease (CWD)
    • The Deadly Chytrid Fungus
    • All About Parasites
    • The Rabies Virus
    • White-Nose Syndrome
  • Contact
    • General Contact
    • Guest Article Submission
      • Guest Articles
        • Guest Articles – 2024
    • What Critter is This?
    • Animal Welfare Organizations
    • Privacy Policy
Gerridae

The Gravity Defying Gerridae

  • 9 November, 2022
  • Critterman
  • No Comments
  • 1202 Views
  • 5 Likes
Arthropod Facts, Daily Critter Facts, Insect Facts

The Gerridae, aka water skeeter, water scooter, water strider, water skipper, water skimmer, water bug, or pond skater, is a water insect that seems to defy gravity, resting on and scooting along the surface of water without sinking. There are 47 known species and 8 recognized genera of these insects. Their preferred habitats are creeks, ditches, lakes, ponds, rivers, swamps, and streams. These insects are found throughout the world, sans Antarctica.

First the Stats…

Scientific name: Gerridae
Length: Up to 0.47 inch
Lifespan: Up to 6+ months

Now on to the Facts!

1.) Gerrids have mouthparts that have evolved for sucking and piercing.

2.) Even though they have piercing mouthparts, they don’t attack humans or other mammals. They are harmless to both.

3.) They prey on spiders and insects that fall into the water.

4.) When a prey item lands in the water, the Gerrid goes to work. They approach the felled invertebrate and puncture their body with their sharp proboscis. Then they inject a salivary enzyme into their victim that dissolves the organs. This allows the now liquefied organs to be sucked out. Yummy.

5.) These insects are diurnal (active during the day).

But wait, there’s more on the Gerridae!

6.) Water striders use the high surface tension of still water and long, hydrophobic legs to assist them in staying above water. Gerridae species utilize this surface tension to their benefit through their highly evolved legs and distributed weight.

7.) Their legs are long and slender, which allows the weight of the water strider’s body to be distributed over a larger surface area. Thus allowing them to walk on water.

Did you know…?
Not only can they walk on water, but these little critters can also fly; at least the ones with wings can. There are some species with shortened or nonexistent wings.

8.) Gerrid females lay their eggs on submerged vegetation or rocks using a gelatinous substance as a type of glue.

9.) Females lay up to 20 eggs each season. Many of which die over winter, but some survive and hatch after winter.

10.) These insects go through an egg stage, 5 instar stages of nymphal forms, and finally the adult stage.

But wait, there’s still more on the Gerridae!

11.) It takes up to 70 days for a water strider to reach adulthood, based on the water temperature.

12.) Birds, fish, and amphibians all prey on Gerrids. However, the Gerrid produces a foul tasting substance that typically deters fish from eating them. Birds and amphibians don’t seem to be affected by this substance.

Did you know…?
These predators not only attack other invertebrates, they also cannibalize each other in that adults will seek younger and smaller Gerrids and attack them. Females are more apt to cannibalize than males.

13.) Numerous endoparasites (parasites that live in a host’s body) have been found in gerrids. Trypanosamatid flagellates, parasitic Hymenoptera, and nematodes, all serve as endoparasites (internal parasites). Water mite larvae act as ectoparasites (external parasites that live on the body, rather than in the body) of Gerridaes.

14.) If the salinity (salt content) increases in the water body, Gerrids will migrate to another body of fresh water.

15.) There are some species of saltwater Gerrids though, that can typically be found around tide pools.

Now a Short Gerridae Video!

Be sure to share & comment below! Also, check out the Critter Science YouTube channel. Videos added regularly!

Want to suggest a critter for me to write about? Let me know here.

Think you know a lot about critters? Try your hand at these fun, free quizzes:

  • Bird Quiz
  • Reptile Quiz
  • Cat Quiz
  • Amphibian Quiz
  • Dolphin Quiz

Photo credit: Hectonichus

bugflyGerridaeinsectpond skaterpredatorpreywaterwater bugwater scooterwater skeeterwater skimmerwater skipperwater strider
Critterman

With over 50 years of critter experience to my credit and hundreds of zoology teaching hours to people around the world, I have amassed not only a continuing thirst for critter knowledge but a desire to teach others all I can about the majesty and wonder of our natural world. Critter Science is a culmination of such knowledge. I have hands on as well as book acquired intel on all kinds of critters. Whether they're on land, sea, or in the air. I will never say that I know everything about all animals. That's impossible, even for a savant. But, that being said, ask me any animal question and I'll answer it. If I don't know the answer, I'll get an answer for you!

The Malayan Civet
The Ortolan Bunting
Related Posts
  • Nepal house martin
    The Nepal House Martin 4 July, 2025
  • booted eagle
    The Booted Eagle 3 July, 2025
  • Wyoming toad
    The Wyoming Toad 2 July, 2025
  • Daily Critter Facts
  • Guest Articles
  • BYET
  • Teachers
  • Study Guides
  • Contact

Copyright © 2025, Critter Science. All Rights Reserved.