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Season guide

Natural World: Season 18

17 episodes Premiered Oct 3, 1999 Updated Sep 26, 2026
Previously on Natural World

Season 18 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Natural World Season 17.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 18 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 18 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 18: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

24%
76%
Mytharc (4): Crucial lore & season climaxes
Core (13): Character development & subplots
Side Quest (0): Standalone / filler
S18·E1 Mytharc

Riddle of the Right Whale

Oct 3, 1999

A dramatic film about Right Whales, the rarest of all the great whales. There's a race on to save them and even US nuclear submarines are part of the effort. Dramatic footage above

S18·E2 Core

Hokkaido: Garden of the Gods

Oct 10, 1999

A look at the unique wildlife of Hokkaido, Japan's northernmost island, and the island's few remaining members of the ancient Ainu race, who see all animals as sacred. Swept by wi

S18·E3 Core

Elephants of the Sand River

Oct 17, 1999

Beneath the forested flanks of an extinct volcano lies a cave with a mysterious secret. Kitum Cave on the slopes of Mt Elgon in Kenya is the only place on earth where elephants ven

S18·E4 Core

In the Company of Bears

Oct 24, 1999

Insight into Canada's black bears, mountain-dwelling creatures which have developed a mutually beneficial relationship with the local human population comprising skiers and snow-bo

S18·E5 Core

The Millennium Oak

Dec 30, 1999

Documentary charting 1,000 years in the life of an English oak, which would have existed from before the Norman Conquest, during the Black Death, Civil War and Industrial Revolutio

S18·E6 Core

The Temple Troop

Dec 12, 1999

Remarkable film following an eventful year in the life of an unruly troop of macaque monkeys in Sri Lanka's ruined city of Polonnaruwa, tracing the audacity, resourcefulness and sh

S18·E7 Core

Wild Indonesia: Island Castaways

Jan 23, 2000

Shrouded in mystery,Indonesia is a bizarre and beautiful place,home to dinosaur-like komodo dragons and tree kangaroos,tropical beaches and snowy mountain peaks.Indonesia is nickna

S18·E8 Core

Wild Indonesia: Underwater Worlds

Jan 30, 2000

Indonesia is one of the worldís natural wonders.In its underwater wonderland,flamboyant reef fish,huge manta rays and shimmering schools of barracudas ride the strong currents that

S18·E9 Core

Wild Indonesia: Magical Forests

Feb 6, 2000

Kangaroos in trees and flying foxes - nowhere else on the planet are their animals as weird and wonderful as in the forests of Indonesia.Despite all the destruction,two thirds of I

S18·E10 Core

The Tiger's Tale

Feb 20, 2000

Insight into the daily lives of a family of Bengal tigers inhabiting the Bandhavgarh National Park in India. Sita's newborn cubs find their feet in the jungle, learning how to clea

S18·E11 Core

The Wolf's Return

May 8, 2000

Documentary reporting on an ambitious plan to reintroduce wild wolves into America's Yellowstone National Park. The animals were virtually hunted out of existence 100 years ago and

S18·E12 Core

Monkey Warriors

May 15, 2000

The monkeys of Jodhpur, India, held in great reverence by the Hindu townsfolk, squabble over territory with a troop from out of town : and finally engage in a full-scale battle to

S18·E13 Core

Dangerous Australians

May 22, 2000

Footage of the lethal wildlife which makes living in Australia a hazardous undertaking. Venomous red-back spiders inhabit garages, funnel-webs stalk houses and gardens looking for

S18·E14 Core

The Crater: Africa's Predator Paradise

Jun 5, 2000

Documentary about the Ngorongoro Crater in Tanzania, which has the highest concentration of predators anywhere in the world. A huge natural bowl inhabited by over 25,000 wildebeest

S18·E15 Mytharc

Salmon: The Silver Tide

Jun 19, 2000

The salmon that fill the rivers of the Pacific coast of North America have one of the most miraculous and mysterious life-cycles in the entire animal kingdom. After years feeding

S18·E16 Mytharc

Claws

Jul 10, 2000

Insight into the lives of crabs, whether they are climbing trees, travelling over mountains, scuttling across deserts or surviving in crushing pressure near super-heated water on d

S18·E17 Mytharc

The Story of an African Wild Dog

At home among the woodlands and floodplains is an African Wild Dog pack - fourteen adults and a bundle of boisterous pups. Part of the few viable remaining wild dog populations lef

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