Shore Buddies Wisdom Wednesday
How do animals breathe underwater? Through the skin! The exchange of gasses takes place through the skin and is called an integumentary exchange. Animals living in water have gills, which are extensions of their outer membranes and contain very thin cells designed to allow gas exchange as the water passes through them.
PHOTO: @stevepeletz
Source: http://www.momjunction.com/articles/water-animal-facts-for-kids_00401580/#gref