Aquatic respiration
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Aquatic respiration is the process whereby an aquatic organism exchanges respiratory gases with water, obtaining oxygen from oxygen dissolved in water and excreting carbon dioxide and some other metab
Sea slugs respire through a gill (or ctenidium)
Posterior view of the gills of a tuna
Aerial view of Slapton Sands and northern part of Ley geograph.org.uk 1434412
Maldivesfish 2
Gill
Videos
A gill is a specialized respiratory organ that many aquatic animals use for aquatic gas exchange, i.e. to extract dissolved oxygen from water and to excrete carbon dioxide. Branchia is the zoologists'
Aquatic respiration
…while remaining submerged, via breathing tubes or trapped air bubbles, though some aquatic insects may remain submerged indefinitely and respire using a plastron. A number of insects have an aquatic juvenile phase and an adult phase on land. In these case adaptions for life in water are lost at the final ecdysis…
The red gills of this common carp are visibly exposed as a result of a gill flap birth defect.
Freshwater fish gills magnified 400 times
The red gills inside a detached tuna head (viewed from behind)
An alpine newt larva showing the external gills, which flare just behind the head