The answer is: Fish

Gen 7:21 - All that moved upon the land perished, but each land animal was preserved in the ark. There is no mention of the water living creatures so they must have been able to survive the flood waters.

The story of Noah's Ark is as fascinating as it is foundational in many religious traditions. When thinking about volunteers for the ark’s journey, one might chuckle at the notion of fish needing a spot onboard. After all, they were already in their natural habitat! Fish, thriving in the deep waters, didn’t require the protection offered by the ark. This raises interesting questions about ecology and divine preservation, showing that ecosystems have their mighty balance even amidst catastrophic events.

You may have noticed that the flood narrative has striking parallels in various cultures, from the Mesopotamian Epic of Gilgamesh to flood myths in Hinduism. These echoes in history remind us that humans have long pondered the power of nature and its disasters, often attributing great relevance to rich storytelling.

Curiously, the dimensions of the Ark, about 450 feet long, give it the shape akin to the MH-53 Sea Stallion helicopter, if converted to modern measurements! This historical mammoth vessel safely housed unlike animals by virtue of divine design, reflecting an important aspect of planning and protection.

Noah's diligent preparations actually set an inspired precedent for how humankind might work to face overwhelming odds. Also, fun fact: consider the rainbow as a symbol of promise following the flood—an amazing twist is that it captures light in such a way that millions of colors emerge, much like our various beliefs enriching our understanding of human experience!