Genesis 6:19 And of every living thing of all flesh, two of every sort shalt thou bring into the ark, to keep them alive with thee; they shall be male and female.
What if God wasn't keeping those animals safe in the ark for that year? What if they were to die on the journey? That would be it for that species! What if when Noah released the animals from the ark the lions decided they wanted a chicken dinner, and ate up a bunch of the other animals before they had an opportunity to be fruitful and multiply? What if some of these wild animals got hungry and had a taste for Shem Kabobs and Ham burgers? Goodbye human race...
But God was in control then, and still is today. Consider the following passage:
Matthew 10:29-31 Are not two sparrows sold for a farthing? and one of them shall not fall on the ground without your Father. But the very hairs of your head are all numbered. Fear ye not therefore, ye are of more value than many sparrows.
Luke 12:6-7 Are not five sparrows sold for two farthings, and not one of them is forgotten before God? But even the very hairs of your head are all numbered. Fear not therefore: ye are of more value than many sparrows.
I don't think this means that God merely knows when one of His creatures dies, but that He is in complete control of their life and death. Near the end of his life, the apostle Paul possibly had these passages in mind when he faced being shipwrecked once again:
Acts 27:22-25 And now I exhort you to be of good cheer: for there shall be no loss of any man's life among you, but of the ship. For there stood by me this night the angel of God, whose I am, and whom I serve, Saying, Fear not, Paul; thou must be brought before Caesar: and, lo, God hath given thee all them that sail with thee. Wherefore, sirs, be of good cheer: for I believe God, that it shall be even as it was told me.
Then a little later he makes this statement:
Acts 27:34 Wherefore I pray you to take some meat: for this is for your health: for there shall not an hair fall from the head of any of you.
And in verse 37, we have God's count of all the lives that were on that ship. Different situation, with a different outcome, but just as God was in control of the lives on that first ship (Noah's ark), even so He was in control of the lives on the ship Paul sailed in - and is still in control today.
For more studies in Genesis (with Genesis as the springboard):