The feathery quality of the gills gives them a very large surface area. why is this important

The feathery quality of the gills that gives large surface area is important because they are considered to be a type of organ that are important to fishes. Without this, they won't be able to have their blood circulated or to even breath. For these gills, are responsible for their blood to circulate and for the gas exchange, in order for them to live.