In the ensuing geological epochs, humans (or what would eventually become humans) didn’t look back. However, with the rise of modern technology in the last century, our species is eyeing other forms of habitation beyond ground-floor living. As humans rush to plant our species’ flag on other planets, entire swaths of the Earth’s oceans remain largely unstudied and unexplored. Measuring only 300 square feet, this first structure will support three professional divers up to around 325 feet, which is fully in the ocean’s “sunlight zone” for short-term missions. Deep Sea,” broke the Guinness World Record for living underwater while residing at the Jules’ Undersea Lodge in Key Largo, Florida, for 100 days.