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The "Blue Planet II" production team's submersible sprung a leak when they were almost 1,500 feet deep in Antarctic waters.
Fortunately, they were able to discover the cause and to conduct repairs underwater.
Envelope - Something - Parts - World - Show
Pushing the envelope is necessary to discover something new and show unseen parts of the world, according to one of the show's producers, but they managed to do that without anyone getting hurt.
Water started to pool on the submersible floor almost 1,500 feet deep into the first dive the "Blue Planet II" production team took in Antarctic waters.
Taste - Salty - Seas
A quick taste revealed it was salty, leaking in from the frigid seas outside.
"That wasn't on the schedule for that day," Orla Doherty, producer of the episode examining life in "the deep," told Business Insider.
Doherty - Featurette - Episode - Bit - Hour
As Doherty said in a behind-the-scenes featurette from the episode, it's a bit concerning to discover that half an hour into a dive — when it takes 30 minutes to get back to the surface — that there's water coming in.
Fortunately, within 20 minutes, the sub's pilot was able to trace the problem to a faulty pressure gauge, which allowed them to repair the leak and resume their examination of the underwater world.
"The way I see it is that I thought...
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