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Tuni Mato

Tuni Mato

Marine biologist, oceanographer, and campaigns director at Australian Marine Conservation Society; former BBC Oceans presenter

Jun 30, 2026

Imagine This

Imagine This

FAN FAVE: How do fish breathe underwater?

Jun 30 · 12m

speaker_1UNKNOWN
5:36
Fish use gills to breathe underwater sometimes.
Tuni Mato
Tuni MatoGUEST
5:40
Yeah, that's right.
Tuni Mato
Tuni MatoGUEST
5:42
Fish take in water that's full of oxygen.
Tuni Mato
Tuni MatoGUEST
5:44
They suck it in through their mouths and push it out over their gills.
Tuni Mato
Tuni MatoGUEST
5:50
On the outside of a fish, gills look like thin slits in their skin on either side of their head.
Tuni Mato
Tuni MatoGUEST
5:56
On the inside, though, gills are wide and flat, and they're made of very thin skin.
Tuni Mato
Tuni MatoGUEST
6:02
Oxygen can get through their skin, but water can't.
NijHOST
10:19
How does it get into the air?

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