system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why do bugs like Ticks and other ones not drown when you hold them under water?

Say you have a tick on your arm. What does it not drown when you hold it underwater for 5 minutes.

or does it?
gpt
They will, eventually, but it takes quite a long time. Bugs like ticks and fleas breathe not with lungs, but with little tiny holes in the outer shell that are connected to little tiny tubes that run throughout the inside of the body. These little holes (called spiracles) are so small that the surface tension of the water near them prevents it from flowing inside. If you put a little soap on a flea or a tick, and then hold it under water (the soap destroys the surface tension) they drown pretty quick.  
EDIT: This is why Raid and WD-40 are so good at killing insects. Raid is mostly the same stuff as WD-40 is: petroleum distillates. These liquids have no surface tension, and flow rapidly into the spiracles, coat the tube network inside, and the insect suffocates quickly.