Season
- Season 0 1970-01-01
- Season 1 1982-10-10
- Season 2 1983-10-09
- Season 3 1984-09-30
- Season 4 1985-10-20
- Season 5 1986-10-19
- Season 6 1987-09-20
- Season 7 1988-10-09
- Season 8 1989-10-08
- Season 9 1990-09-30
- Season 10 1991-09-28
- Season 11 1992-10-05
- Season 12 1993-10-03
- Season 13 1994-10-02
- Season 14 1995-10-08
- Season 15 1996-10-13
- Season 16 1997-10-12
- Season 17 1998-10-11
- Season 18 1999-10-24
- Season 19 2000-10-22
- Season 20 2001-09-09
- Season 21 2002-10-13
- Season 22 2003-10-19
- Season 23 2004-11-07
- Season 24 2005-11-06
- Season 25 2006-10-24
- Season 26 2007-10-28
- Season 27 2008-10-26
- Season 28 2009-10-25
- Season 29 2010-09-26
- Season 30 2011-10-19
- Season 31 2012-10-10
- Season 32 2013-09-04
- Season 33 2014-09-24
- Season 34 2015-09-23
- Season 35 2016-10-12
- Season 36 2017-10-04
- Season 37 2018-10-24
- Season 38 2019-10-02
- Season 39 2020-10-21
- Season 40 2021-10-20
- Season 41 2022-10-19
- Season 42 2023-10-18
- Season 43 2024-10-23
- Season 44 2025-10-22
Nature - Season 30 Episode 9 Ocean Giants: Deep Thinkers
7.90 53 minutes Whales and dolphins conjure a deep sense of wonder in us that’s hard to explain. From the Arctic to the Amazon, this groundbreaking three-part series goes on a global expedition with world-renowned underwater cameramen, Doug Allen (Planet Earth) and Didier Noirot (Jacques Cousteau’s cameraman), as they capture spellbinding footage of these marine mammals. Ocean Giants looks at how cetaceans hunt, mate, and communicate, and follows scientists as they strive to uncover new insights about these animals.
The second hour, Deep Thinkers, explores the cognitive and emotional lives of dolphins and whales. Like us, cetaceans have special brain cells, spindle cells, that are associated with communication, emotion, and heightened social sensitivity. These cells were once thought to be unique to us, but research is now showing that whales and dolphins may have up to three times more spindle cells than humans.
