The dimensions of fish gills in relation to their function.
D000818:Animals; D001699:Biometry; D001810:Blood Volume; D005399:Fishes / Q000033:anatomy & histology* / Q000502:physiology*; D008386:Marine Biology; D010101:Oxygen Consumption; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000033:anatomy & histology*