Main content
Web exclusive: Keystone species
The loss of a keystone species like sea otters can have a devastating impact on an ecosystem.
Duration:
This clip is from
More clips from Extinction: The Facts
-
![]()
Pandemics - are we fuelling them?
Duration: 04:56
-
![]()
Extinction: The Facts in 6 minutes
Duration: 05:52
-
![]()
Web exclusive: The extinction vortex
Duration: 01:52
-
![]()
Web exclusive: Plants and medicine
Duration: 01:09
