Our researchers estimate a maximum of around 7,000 animals were on board the Ark, and Noah still had sufficient space for food, water, and other storage. That’s a pretty big floating zoo, but not unmanageable. Food and Water Noah probably stored the food and water near each animal. Even better, drinking water could have been piped into troughs. The use of some sort of self-feeders, as is commonly done for birds, would have been relatively easy for most animals. Nobody said it would be comfy, iyt was probably pretty tight. There didn't NEED to be a world wide flood and sea animela didn't need to go so there's an extameted 7,000 species needed to fit.