But was the ark big enough to hold the number of animals
required?
The total available floor space on the ark would have been over
100,000 square feet, which would be more floor space than in 20
standard-sized basketball courts.
Assuming an 18-inch cubit [45.72 centimeters], Noah's Ark would
have had a cubic volume equal to 569 modern railroad stock
cars.
The total cubic volume would have been 1,518,000 cubic feet
[462,686.4 cubic meters] --that would be equal to the capacity of
569 modern railroad stock cars.
Now comes the question, how many land dwelling air breathing
animals would have had to be taken aboard the ark to survive the
flood?
According to Ernest Mayr, America's leading taxonomist, there are
over 1 million species of animals in the world.
God only provided the Ark for the protection of humans and
land-dwelling, air-breathing creatures. A huge number of animals
would not need to be taken aboard the Ark because they are water
dwellers. Representatives would be expected to survive the
catastrophe. With God's protection against extinction during the
Deluge, survival would have been assured.
However, the vast majority of these are capable of surviving in
water and would not need to be brought aboard the ark. Noah need
make no provision for the 21,000 species of fish or the 1,700
tunicates (marine chordates like sea squirts) found throughout the
seas of the world, or the 600 echinoderms including star fish and
sea urchins, or the 107,000 mollusks such as mussels, clams and
oysters, or the 10,000 coelenterates like corals and sea anemones,
jelly fish and hydroids or the 5,000 species of sponges, or the
30,000 protozoans, the microscopic single-celled creatures.
In addition, some of the mammals are aquatic. For example, the
whales, seals and porpoises. The amphibians need not all have been
included, nor all the reptiles, such as sea turtles, and
alligators. Moreover, a large number of the arthropods numbering
838,000 species, such as lobsters, shrimp, crabs and water fleas
and barnacles are marine creatures. And the insect species among
arthropoda are usually very small. Also, many of the 35,000 species
of worms as well as many of the insects could have survived outside
the Ark.