#FishBreathe, #GillRespiration, #UnderwaterOxygenExchange
Fish breathe underwater through a process called respiration, but it's different from how humans and many other animals breathe. Fish use gills to extract oxygen from water. Here's how the process works:

Water Intake: Fish open their mouths, allowing water to flow in.

Gill Filaments: Inside the gills, there are thin structures called gill filaments. These filaments are covered in tiny projections called lamellae.

Oxygen Exchange: As water passes over the gill filaments, oxygen from the water diffuses through the thin walls of the filaments and into the fish's bloodstream. At the same time, carbon dioxide from the fish's blood diffuses out into the water.

Water Exhalation: The now-deoxygenated water is expelled through openings called gill slits on the sides of the fish.

This process allows fish to extract the dissolved oxygen present in water, which is essential for their survival. It's worth noting that not all fish use gills; some species, like lungfish, can also breathe air to some extent, while others, like certain catfish, can extract oxygen through their intestines. However, the majority of fish rely on gills for underwater respiration.
#AquaticRespiration, #GillFilaments, #UnderwaterBreathing, #MarineLife, #OxygenExchange, #FishSurvival, #WaterRespiration

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