000			01771 a2200229 4500
008			240522b 2023|||||||| |||| 00| 0 eng d
020			_a9780008532734 (PB)
041			_aeng
080			_a551.46 _bMAY
100			_aMaynard, Jeff
245			_aThe Frontier Below _b: The Past, Present and Future of Our Quest to Go Deeper Underwater
260			_bWilliam Collins _c2023 _aLondon
300			_axvii, 298p. _bcol. ill
504			_aIncludes Bibliography (279-285) and Index
520			_aThis is a journey through time and water, to the bottom of the ocean and the future of our planet. We do not see the ocean when we look at the water that blankets more than two thirds of our planet. We only see the entrance to it. Beyond that entrance is a world hostile to humans, yet critical to our survival. The first divers to enter that world held their breath and splashed beneath the surface, often clutching rocks to pull them down. Over centuries, they invented wooden diving bells, clumsy diving suits, and unwieldy contraptions in attempts to go deeper and stay longer. But each advance was fraught with danger, as the intruders had to survive the crushing weight of water, or the deadly physiological effects of breathing compressed air. The vertical odyssey continued when explorers squeezed into heavy steel balls dangling on cables, or slung beneath floats filled with flammable gasoline. Plunging into the narrow trenches between the tectonic plates of the Earth’s crust, they eventually reached the bottom of the ocean in the same decade that men first walked on the moon.
650			_aDeep diving -- History
650			_aOceanography
650			_aScuba diving
650			_aUnderwater exploration -- History
690			_aGeneral
942			_cBK
999			_c60323 _d60323