Did You Know?
Some fish can breathe air too!
How Gills Work
Water goes in through the mouth.
Where Are Gills?
Gills are on the sides of fish.
What gills Does
Gills help fish breathe in water.
They take in oxygen from the water.
Gills let out carbon dioxide.
Fish need gills to live in water.
Some fish can use gills and lungs.
Gills are very cool and smart!
More About gills
Gills help fish breathe in water. They are very special. Fish can live in water because of gills. Without them, fish would not be able to breathe.
Gills are important for fish and other sea animals. They help keep the water clean too. When fish breathe, they help the water stay fresh.
Some fish can even jump out of the water! They can breathe air for a short time. This is very cool and helps them survive.
How Topics Connect
graph TD
A["Aquatic Animals"] --> B["Use Gills for Respiration"]
B --> C["Aquatic Gas Exchange"]
C --> D["Extract Dissolved Oxygen"]
C --> E["Excrete Carbon Dioxide"]
A --> F["Branchia (Zoologists' Term)"]
What Do These Words Mean?
gill:a part of fish and some other animals that helps them breathe underwater
respiratory organ:a body part that helps an animal take in air or oxygen
aquatic:related to water or living in water
gas exchange:the process of taking in oxygen and getting rid of carbon dioxide
branchia:the scientific name for gills
