SKU: 70259704803

The Frontier Below: The Past, Present and Future of Our Quest to Go Deeper Underwater (Hardcover)

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The Frontier Below: The Past, Present and Future of Our Quest to Go Deeper Underwater (Hardcover)Triumphs and disasters in the deep sea This 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

Triumphs and disasters in the deep sea

This 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.

Today, as nations scramble to exploit the resources of the ocean floor, The Frontier Below recalls a story of human endeavour that took 2,000 years to travel seven miles, then investigates how we will explore the ocean in the future.

Meticulously researched and drawing extensively on unpublished sources and personal interviews, The Frontier Below is the untold story of the pioneers who had the right stuff, but were forgotten because they went in the wrong direction.

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SKU: 70259704803

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4.3 ★★★★★
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MAW2002
Dallas, US
★★★★★ 5
Tough toys for tough girls
Color: Ring
I have 3 large dogs that are proficient at destruction and extremely aggressive chewers. Few toys survive them. I bought several of these toys and they have been put through the ringer but still in great shape. Definitely worth it in my book. I wish there were more cute options but cute doesnt typically last for these 3.
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Reviewed in the United States on November 18, 2025
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Kate Yamokoski
Bozeman, US
★★★★★ 5
Great chew toy for my golden retriever .
Color: Ring
My golden retriever loves this toy . And she has not chewed it up . I bought several of them . It is durable and she is an aggressive chewer with toys .
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Reviewed in the United States on May 29, 2025
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Verified Purchase
The Big Guy of Michigan
San Leandro, US
★★★★★ 5
Dog chew toy
Color: Ring
Well made, too big & heavy for small-medium dogs.
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Reviewed in the United States on February 2, 2026
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Verified Purchase
ZC
Louisville, US
★★★★★ 4
My dogs go CRAZY for these!
Color: Ring
My Pitbull and Frenchie go CRAZY for these! They do have a leathery type smell to them if you’re sensitive to that (doesn’t bother me) and my dogs WILL ingest what they tear off if I don’t watch them closely. Only removing 1 star because of how fast my dogs tear these apart and how deliciously enticing they apparently are to ingest, but my dogs may just be psychopaths. :)
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Reviewed in the United States on September 13, 2025
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Verified Purchase
Hannah Hettasch
Fort Morgan, US
★★★★★ 5
Not the most durable, but my dog LOVES it.
Style: Plush Surprise Color, Size: 24"
My boyfriend’s dog had the small version from Petsmart and she has been very gentle with it since she likes it so much. I decided to surprise her with this 24 inch one for Christmas. She was obsessed! It’s cute, it’s very soft, and has a big squeaker in the top, which she loves! She was a little more tough on it and it did get some rips 12 hours in, but it is still in one piece at the moment and brings lots of joy. The dog is a medium/large size. Dog toys can be so expensive. I personally think the was a great price despite not being the most durable. I may purchase again next year!
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Reviewed in the United States on January 3, 2026

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