How does a spider breathe?
Insect respiration takes place by passive diffusion into and out of a network of tracheal tubes. Most spiders also have tracheae, but their main respiratory organs are book lungs (shown at right) in which the “book pages” are hollow air-filled plates surrounded by the spider’s blood.
Where do spiders breathe?
Spiders breathe through book lungs or trachea, which are extremely narrow tubes running through their bodies.
Do spiders have lungs or gills?
The creatures don’t have lungs or gills, so the only other explanation seemed to be that the spiders were absorbing oxygen through their skin. But their skin is tough, a rigid exoskeleton that allows them to move around, and oxygen absorption through that would be unlikely.
Can spiders breathe without oxygen?
The movement of a spider provides the necessary energy for air to be pushed in and out of the book lungs or trachea. However, spiders require less oxygen than people do. Therefore they can go hours to even days without breathing.