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My book "Ask An Ocean Explorer"(*) is out in 30 days (on 21 Feb).

So for the next 30 days, I'll be sharing some of the wonders & history of exploring the deep here, in #30daysofdeep

(*<cough>available for pre-order, e.g. amazon.co.uk/Ask-Ocean-Expl…; also for Kindle, & audio book)
On this day, 59 years ago, two people reached the ocean's deepest point for the first time.

Here's a wonderful account by one of them, Don Walsh, in his own words: scientificamerican.com/article/diving…

And here's some archive newsreel footage:

#30daysofdeep 1/30
#30daysofdeep 2/30

Here's Gorringe Bank, a twin-peaked seamount near Portugal that rises from ~5 km deep to ~50 m deep, taller than Mont Blanc in the Alps. Home to >800 species, from deep-sea glass sponges to kelp.

Discovered by USS Gettysburg in 1875 under Capt Henry Gorringe.
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