Short Note on Exchange of Gases in Aquatic Animals

Note on Exchange of Gases in Aquatic Animals


Through Skin:


The skin of aquatic animals is moist and rich with blood so that oxygen can diffuse directly. Frog and tortoises breathe through skin during hibernation.



Through Gills:


Gills are very effective for gaseous exchange in aquatic animals. Some animals have external gills. Water enters through mouth flows over the gills and goes out of the body.



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