Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Gill like structure found in larvae of aquatic insects
A blood gill is a gill-like structure restricted to organs with spacious lumen and poorly developed/absent trachea, found in larvae of aquatic insects. Specific research questions the functionality of this gill to respiration, and concludes it exists more likely to absorb water.
References
^ Thorpe, W. H. (April 1933). "Tracheal and Blood Gills in Aquatic Insect Larvæ". Nature. 131 (3311): 549–550. doi:10.1038/131549b0. ISSN1476-4687.
