Why aquatic animals cannot breathe when they are on land?

Aquatic animals are not adapted to breathe on land. There are a few reasons why this is the case:

• Gills: Aquatic animals, such as fish, have gills to breathe. Gills are thin, feathery structures that are located on the sides of the head. Gills work by extracting oxygen from the water. When an aquatic animal is on land, its gills cannot function because they are not in contact with water.

• Lungs: Some aquatic animals, such as certain species of frogs and turtles, have lungs in addition to gills. Lungs are air-breathing organs that are located in the chest. Lungs work by extracting oxygen from the air. However, when an aquatic animal is on land, its lungs may not be able to function properly because the air is not as dense as water.

• Body temperature: Aquatic animals are ectothermic, which means that their body temperature is regulated by the environment. When an aquatic animal is on land, its body temperature may rise too high, which can cause it to become stressed or even die.

In conclusion, aquatic animals cannot breathe when they are on land because their gills and lungs are not adapted to extract oxygen from the air. Additionally, their body temperature may rise too high, which can cause them to become stressed or even die.