Gill | Fish, Aquatic, Oxygen | Britannica
https://www.britannica.com/science/gill-respiratory-system
Webgill, in biology, type of respiratory organ found in many aquatic animals, including a number of worms, nearly all mollusks and crustaceans, some insect larvae, all fishes, and a few amphibians.
DA: 25 PA: 82 MOZ Rank: 11