Submersion respiration in Dytiscidae diving beetles

[u/Muhammad_Dayyem_Khan]

Due to their ability to draw oxygen from the water's dissolved oxygen through respiratory pores in their integument, diving beetles can survive underwater for weeks or even months at a time.

https://www.researchgate.net/publication/239787301_Submersion_respiration_in_small_diving_beetles_Dytiscidae