The Ark and it's shipment
One of the biggest issues with people who do not believe the account of the Flood and Noah's Ark is how could all the animals on the planet have fit into the Ark. This is a perfectly fair and important question that has to be addressed if we are to believe that the Flood and Ark are actual history.
Many people think of the childrens version of the ark that looks like a cute bath toy with Girraffe heads sticking out and some birds perched on top and a pair of happy smiling lions. This is an extremely infantile version that has become useful for toddlers books, but it is far from the true appearance and grandeur of the real Ark or the severity and magnitude of the Flood that covered and reshaped the entire globe. These people ask how all the species could have fit into the Ark. This is a problem when we realize there are over 1 million species that would have to fit, but the account in Genesis does not say species, it says "Kinds", a term more often associated with a broader definition than the word species. Term "Kind" is usually assigned to what we know as Family or Genus depending on the organism.
The reality of it is that the vast majoirty of animals on the planet are invertebrates, most of which are marine animals which would not have to be on the Ark since they live in water. The number of animals Noah would have taken onto the Ark is far outshined by the number of animals he WOULDN'T have taken onto it. Noah would have not had to take on Fish, Tunicates (animals like Sea Squirts), echinoderms (animals like starfish and sea urchins), Mollusks, Coelenterates (aniamls liek coral, jellyfish and anemones), Sponges, Protozoans, Cetaceans (Whales and Dolphins), aquatic worms, Arthopods(such as lobsters, shrimp, etc.), Marine reptiles (Mosasaurs and Plesiosaurs), Aquatic ampbians and sea turtles, Barnacles, aquatic insects and Archnids. This leaves the vast minority of animals needed to be taken onto the Ark.
Mostly there would have been land dwelling animals such as land dwelling mammals like cats, dogs, monkeys, elephants, dinosaurs, etc. There would be reptiles and amphibians on the Ark such as Dinosaurs, lizards, snakes, etc. There would be flying animals such as birds, bats and Pterosaurs. There may even have been land dwelling insects and arachnids since although there are many of them, most of them could have lived out of the way of the other animals and many are small, even then. Though many of them could have been stowaways that got onto the Ark out of the water. Though many Creationists believe that the insects and arachnids could have lived on the floating bodies and mats of vegetation that floated in the water since most insects and arachnids survive floods today by these means.
We must also realize that the overall average size of the animals that would ahve been on the Ark is about the size of a sheep or goat. And also that there were only two of many animals and only 7 of the others. Also, it was not necessary to bring on adults of all the animals, many could have been subadults that were just reaching sexual maturity, ensuring that they could breed the maximum amount of times and produce the maximum amount of potential offspring.
We must also remember once again that the Bible states that Noah housed "Kinds" of animals, not what we call species, meaning that every species and subspecies of animal that could be housed was housed. This means that instead of having Afrcian elephants, Asian elephants, Forest elephants, and pygmy elephants there would only have to have been one pair of elephants that had the genetic information to produce all the subspecies listed. There also would only have to have been one pair of dogs with enough genetic information to produce all the types of dogs we have today, likely a pair of wolves.
One of the biggest questions and concerns for believers is "was the Ark big enough?". The answer can be found in the Bibles description of the Ark. In Genesis 6:15 God says
And this is the fashion which thou shalt make it of: The length of the ark shall be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.
This was likely based on teh 18 inch cubit not the 22 inch cubit. This means the Ark would have measured 450 feet long (137.16 meters), 75 feet wide (22.86 meters), and 45 feet tall (13.716 meters). This would have beent he largest sea going vessel ever made until the late 1800's. It was also more of a barge than a boat as it was not intended to travel anywhere but to weather the storms and flood waters, it had no destination, it was designed to keep it's cargo safe. The ark was almost like a floating animal storage facility, complete with compartments and food storage.