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Season
- Season 1 1999-04-12
- Season 2 1970-01-01
- Season 3 1970-01-01
- Season 4 2002-01-01
- Season 5 2003-05-11
- Season 6 2004-04-12
- Season 7 2005-01-01
- Season 8 2006-01-01
- Season 9 2007-01-01
- Season 10 2008-01-01
- Season 11 2009-08-15
- Season 12 2010-02-23
- Season 13 2011-10-06
- Season 14 2012-08-17
- Season 15 2013-01-01
- Season 16 2014-03-30
- Season 17 2015-01-10
- Season 18 2016-01-09
- Season 19 2017-01-15
- Season 20 2018-01-14
- Season 21 2019-01-20
- Season 22 2020-01-18
- Season 23 2021-01-04
- Season 24 2022-01-23
- Season 25 2023-01-22
- Season 26 2024-01-21
Season 26 Episode
- Season 16 The Front Line of Alzheimer's Prevention
- Season 16 The Gods Move House Mysteries of Ise and Izumo
- Season 16 Disaster Big Data: Preparing Tokyo Residents for the Worst
- Season 16 Challenging the Paranormal Episode 1: The Afterlife
- Season 16 Challenging the Paranormal Episode 2: Psychic Power
- Season 16 Brown Bears' Fateful Journey: Life on the Shiretoko Peninsula
- Season 16 Marimo - Mysterious Living Spheres
- Season 16 Mach Stem: The Nagasaki bombing intensified
- Season 16 The Teotihuacan Enigma: A New Dawn of Civilization
NHK Documentary - Season 16 Episode 7 Marimo - Mysterious Living Spheres
0.00 57 minutes Lake Akan on the Japanese island of Hokkaido is said to be the last place on Earth where algae balls called Marimo grow in the wild. The spherical shape makes photosynthesis difficult, so scientists have long wondered how Marimo survive. NHK obtained permission to film their habitat for a year, in the first project of its kind. Join us as we explore a spectacle of nature in Lake Akan.
