Fish gill
Videos
Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills on both sides of the pharynx. Gills possess tissues resembling short th
Gill arches bearing gills in a pike. Gills allow fish to breathe underwater.
Respiratory mechanism in bony fish The fish draws oxygen-rich water in through the mouth (left). It then pumps it over gills so oxygen enters the bloodstream, and allows oxygen-depleted water to exit through the gill slits (right)
Tuna gills inside the head. The head is oriented snout-down with the view looking towards the mouth.
The red gills detached from the tuna head on the left
Aquatic respiration
Videos
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)
Aerial view of Slapton Sands and northern part of Ley geograph.org.uk 1434412
Maldivesfish 2