Season 18 Episodes19
Cast1

Alberto Angela
Self - Host
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We follow Alberto Angela into the depths of the abyss. The world of the deep sea is still little known and full of surprises. We know the surface of the Moon in more detail than the depths of our seas. In this episode we discover

Alberto Angela
Self - Host
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"Challenge to the Abyss" is episode 15 of Ulisse - The Pleasure of Discovery season 18. It aired on April 21, 2018.