Main content
Conquest of the Waters
Episode 5 of 13
Fish occur in populations of billions and there are over 30,000 species, more than in any other group of backboned animals. The development of the backbone was a crucial advance in evolution - and it probably came from a most unlikely source, a little jelly-like creature called a sea squirt.
Last on
Sun 19 Jul 2026
01:00
More episodes
Previous
Next
Clip
-
![]()
The toothy jaws that led to the rise of the shark
Duration: 03:34
Credits
| Role | Contributor |
|---|---|
| Presenter | David Attenborough |
| Producer | Richard Brock |
Broadcasts
Tue 13 Feb 1979 20:10蘑菇短视频 Two except East, South East & Yorkshire- Sun 18 Feb 1979 19:10蘑菇短视频 Two except East, South East & Yorkshire
Tue 1 Apr 1980 19:35- Wed 2 Dec 1981 18:35蘑菇短视频 Two except East, South East & Yorkshire
- Mon 29 Sep 1986 19:35
- Sun 7 Jun 1992 19:15蘑菇短视频 Two except East, South East & Yorkshire
- Fri 1 Feb 2013 16:15蘑菇短视频 Two Northern Ireland, Wales, Scotland & England only
- Sat 18 Jan 2014 09:10蘑菇短视频 Two HD, Wales, England, Northern Ireland & Scotland only
- Sat 18 Jul 2026 19:05
- Sun 19 Jul 2026 01:00
Featured in...
![]()
Secrets of the Deep
Discover the abundance of life underneath the surface.
David Attenborough's favourite moments from 30 years of broadcasting
From close encounters with rare creatures to poignant insight on the state of the planet.