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Can fleas breathe under water
- By Emma
-
- December 3, 2025
No, fleas can't breathe underwater. Fleas are terrestrial insects that rely on a system of tiny tubes called tracheae to transport oxygen directly to their tissues. These tubes open to the outside through spiracles, which function like small breathing holes. When submerged, water blocks these spiracles, preventing oxygen from reaching the tracheae, causing the flea to suffocate.
Fleas lack gills or any adaptations for extracting oxygen from water. While some insects can survive brief submersion by trapping air bubbles or slowing metabolism, fleas are not adapted for aquatic environments and cannot survive prolonged underwater exposure.
To understand how fleas survive in water and for the benefits of flea killing shampoo, click here.
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