How do insects deal with inclement weather and flood conditions?
Go out and find an ant, place it in a glass of water, after a few seconds the ant will appear like it has drowned; it will be lying at the bottom of the glass of water. After a few minutes, remove the ant and pour some salt on it, the salt helps the ant dry out more quickly. Shortly, the ant will begin to move about as if nothing happened.
How does the ant do this, and why does it not drown? Ants and other insects do not breathe like we do; they breathe through tubes in their bodies called spiracles. All over their abdomens are little holes that let air into the bodies. When an insect is faced with heavy rains or floods, they just close off these spiracles. They are able to survive for weeks by closing the spiracles.
Did Noah take insects on board the ark? Probably not. He did not have to because they would have survived the flood by closing their spiracles. Genesis 7:22 states, “Everything on dry land that had the breath of life in its nostrils died.” Insects do not have nostrils, and they could have survived quite well outside of the Ark. All other types of land animals, those that breathed through their nostrils, died.
Even if Noah had collected and put representative insects into cages, one million different kinds would only fill 12 railroad cars. This is miniscule compared to the size of the entire Ark, which had a size equivalent to 522 railroad cars. Insects could and did survive Noah’s flood.
(Source: Inspired Evidence – Von Vett & Malone)