About Swarm: Nature's Invasions

Swarm is the two-part natural history documentary film about the amazing intelligence of animal swarms narrated by David Tennant.


The awe-inspiring Swam takes us into the heart of animal swarms to reveal how these unique creatures view our world.


The first episode introduces the concept of swarms, how a whole host of animals can act as if one huge organism. Using the latest camera techniques Swarm takes a look into the heart of a superswarm, and then goes on to reveal how one particular swarm is helping to save the planet from the greenhouse effect.

The final instalment of Swarm shows what happens a swarm encroaches where they may not necessarily be wanted. In addition, it's not just insects that form massive swarms! Millions of bats form a massive living tornado in which complex information is exchanged between individuals.