Only 7% of the Great Barrier Reef is made of coral reef. The rest is a variety of habitats including the world's oldest jungle, hundreds of islands, swamps, sand flats and meadows of sea grass.

However fascinating the reefs themselves may be, far more species depend on the environment they create outside. This occurs in Australia and its Indian Ocean waters in abundant number and variety.

We take in New Zealand's natural beauty from Fiordland - the home of the Hobbits - to Cape Reinga, the northern tip where wild horses run along lonely sandy beaches.

Vet Bridget is called out to a prolapsed sheep on a hill farm, Guy tries to resolve border collie Riley's swollen face, and David must deal with a cat who faces dental surgery.

Across the jungle, from canopy to floor, survival is a full-time job. From the smallest to the most powerful, each predator shapes the balance of its domain, using instinct, experience and planning.

The Yangtze, the biggest river in Asia, was once home to rare aquatic mammals and prodigious quantities of fish. Jeremy passes by Shanghai, the huge Three Gorges Dam, and the uplands of Yunnan.

To ensure their survival for the upcoming winter, Alaskans must head out into the fray. From scouting for resources in sub-zero temperatures to hiking the countryside in search of food.

We take in New Zealand's natural beauty from Fiordland - the home of the Hobbits - to Cape Reinga, the northern tip where wild horses run along lonely sandy beaches.

The San Andreas Fault is the junction point of two tectonic plates stretching across San Francisco and Los Angeles; it is 1,300km long and currently the most surveyed phenomenon in the world.

To ensure their survival for the upcoming winter, Alaskans must head out into the fray. From scouting for resources in sub-zero temperatures to hiking the countryside in search of food.

Tennessee's Great Smoky Mountains live up to their name as America's most popular national park goes up in flames. Meanwhile a mega typhoon pulverises Macao.

The Yangtze, the biggest river in Asia, was once home to rare aquatic mammals and prodigious quantities of fish. Jeremy passes by Shanghai, the huge Three Gorges Dam, and the uplands of Yunnan.

To ensure their survival for the upcoming winter, Alaskans must head out into the fray. From scouting for resources in sub-zero temperatures to hiking the countryside in search of food.

We take in New Zealand's natural beauty from Fiordland - the home of the Hobbits - to Cape Reinga, the northern tip where wild horses run along lonely sandy beaches.

Across the jungle, from canopy to floor, survival is a full-time job. From the smallest to the most powerful, each predator shapes the balance of its domain, using instinct, experience and planning.

The Yangtze, the biggest river in Asia, was once home to rare aquatic mammals and prodigious quantities of fish. Jeremy passes by Shanghai, the huge Three Gorges Dam, and the uplands of Yunnan.

The Alaskans struggle to accomplish their tasks. For Glenn and Andy, freezing temperatures and thick ice mean increased difficulties for trapping. Jessie's sled dog race is complicated by snowfall.

We take in New Zealand's natural beauty from Fiordland - the home of the Hobbits - to Cape Reinga, the northern tip where wild horses run along lonely sandy beaches.

The volcano Hunga Tonga-Hunga Ha'apai erupted with the power of over 60 million tons of TNT on the 15th of January, 2022; why did this volcano produce such an immensely powerful eruption?

The Alaskans struggle to accomplish their tasks. For Glenn and Andy, freezing temperatures and thick ice mean increased difficulties for trapping. Jessie's sled dog race is complicated by snowfall.

Tennessee's Great Smoky Mountains live up to their name as America's most popular national park goes up in flames. Meanwhile a mega typhoon pulverises Macao.

The Yangtze, the biggest river in Asia, was once home to rare aquatic mammals and prodigious quantities of fish. Jeremy passes by Shanghai, the huge Three Gorges Dam, and the uplands of Yunnan.