Natural World - Season 3 - Eps 8: The Lost World Of Medusa
On a remote Pacific island a mysterious lake lies hidden by dense jungle. Below the surface a gigantic shimmering phantom swims, tracking the sun. This weird life form is composed of jellyfish - millions of them - a boiling mass of medusae. Like the other bizarre inhabitants of the lake, imprisonment in this peculiar marine underworld has changed their behavior. But there are other surprises too in this first filmed exploration of the labyrinthine limestone islands of Palau - rain forests sprout from razor-sharp coral rubble; whip scorpions, giant crickets and bats haunt vast caves; and a deep lake pulsates with a strange presence.
About Natural World

Title: Natural World
First Air Date: 1983-10-30
Last Air Date: 2020-03-20
Status: Returning Series
Rating: 7.1/10 (from 25 votes)
Language: EN
Seasons: 40
Total Episodes: 543
Network: BBC Two
Genres: Documentary
Production Companies: BBC Studios, BBC Studios Natural History Unit, BBC
Synopsis
Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.
Cast

David Attenborough
Self - Host

John Hannah
Narrator (voice)

Juliet Stevenson
Narrator (voice)