Not a scientific nor religious sound answer here, just going along with this: I reckon that might have been the main source of nourishment for the passengers of the ark. EDIT: I just noticed the Riddles category. Now my answer sounds pompous : )

They mostly ate eggs from all them different birds. It was raining out so it was hard to go fishing. They also brought a large stock pile of food to feed all the wide variety of animals, surely there were more than two of certain species to feed the carnivores they had on board.

Nope. Men were vegetarians until after the Flood - at least so say most Biblical scholars. Genesis 1:29 reads, "Then God said, 'I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food. 30 And to all the beasts of the earth and all the birds of the air and all the creatures that move on the ground--everything that has the breath of life in it--I give every green plant for food.'" That doesn't change until Noah was safe and sound on Ararat: GEN 9:2 The fear and dread of you will fall upon all the beasts of the earth and all the birds of the air, upon every creature that moves along the ground, and upon all the fish of the sea; they are given into your hands. 3 Everything that lives and moves will be food for you. Just as I gave you the green plants, I now give you everything. GE 9:4 "But you must not eat meat that has its blood still in it. 5 And for your blood I will surely demand an accounting. I will demand an accounting from every animal. And from each man, too, I will demand an accounting for the life of his fellow man. GE 9:6 "Whoever sheds the blood of man, by man shall his blood be shed; for in the image of God has God made man.

Nope. Men were vegetarians until after the Flood - at least so say most Biblical scholars. Genesis 1:29 reads, "Then God said, 'I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food. 30 And to all the beasts of the earth and all the birds of the air and all the creatures that move on the ground--everything that has the breath of life in it--I give every green plant for food.'" That doesn't change until Noah was safe and sound on Ararat: GEN 9:2 The fear and dread of you will fall upon all the beasts of the earth and all the birds of the air, upon every creature that moves along the ground, and upon all the fish of the sea; they are given into your hands. 3 Everything that lives and moves will be food for you. Just as I gave you the green plants, I now give you everything. GE 9:4 "But you must not eat meat that has its blood still in it. 5 And for your blood I will surely demand an accounting. I will demand an accounting from every animal. And from each man, too, I will demand an accounting for the life of his fellow man. GE 9:6 "Whoever sheds the blood of man, by man shall his blood be shed; for in the image of God has God made man.

Nope. Men were vegetarians until after the Flood - at least so say most Biblical scholars. Genesis 1:29 reads, "Then God said, 'I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food. 30 And to all the beasts of the earth and all the birds of the air and all the creatures that move on the ground--everything that has the breath of life in it--I give every green plant for food.'" That doesn't change until Noah was safe and sound on Ararat: GEN 9:2 The fear and dread of you will fall upon all the beasts of the earth and all the birds of the air, upon every creature that moves along the ground, and upon all the fish of the sea; they are given into your hands. 3 Everything that lives and moves will be food for you. Just as I gave you the green plants, I now give you everything. GE 9:4 "But you must not eat meat that has its blood still in it. 5 And for your blood I will surely demand an accounting. I will demand an accounting from every animal. And from each man, too, I will demand an accounting for the life of his fellow man. GE 9:6 "Whoever sheds the blood of man, by man shall his blood be shed; for in the image of God has God made man.