Eastern Poland is one of Europe's last wild regions; the Biebrza lowlands make up the biggest national park in Poland and are of the utmost value for beavers, otters and countless aquatic birds.

Scientists are uncovering new truths about cats using tech like tracking collars; from cheetahs' agility to Iberian lynx recovery, groundbreaking research and conservation offer hope for wild cats.

Irma, a category five hurricane, devastates the Caribbean. In Fiji, a carer battles catastrophic floods to reach children at an orphanage.

Jeremy is on the trail of a new river monster after a corpse is found with highly unusual injuries. He also uncovers a spate of disappearances and a mysterious creature patrolling the water.

Gary, Shannon, Callie and Damon try to catch a ten-foot alligator in a muddy mess, and there is one big problem near a local golf course when a gator gets stuck near a busy street.

Gary, Arlie and Jake search for a gator in an RV park, Shannon finds a timber rattlesnake at a local business, and the team trade gators with their sister park in South Padre Island, Texas.

Rodolphe dives into icy waters from the Salish Sea to Norway to see if we can live with killer whales, intelligent and family-driven - yet feared - predators whose fate is closely tied to ours.

The realm of cold is a harsh territory, but it is also full of opportunities; only the most resilient creatures manage to thrive in an environment where adaptation is the key to survival.

We delve into dense jungles where humidity dictates all aspects of life; creatures here not only contend with predators and the search for food, but also with diseases that thrive in high moisture.

In the most arid regions of the planet - where relentless heat dominates day and night - animals face one of nature's greatest challenges: survival in extreme temperatures.

Scientists are uncovering new truths about cats using tech like tracking collars; from cheetahs' agility to Iberian lynx recovery, groundbreaking research and conservation offer hope for wild cats.

In the dead of winter, Alaskans travel high, far and wide to obtain resources for survival. Glenn pursues caribou in the mountains of the Brooks Range.

Alaskans must trap and hunt for essential food and fur to survive dark winter. In Kavik, Sue Aikens hunts for caribou and ptarmigan on the tundra.

Alaskans pursue scarce resources in anticipation of the coming spring. In Kiwalik, Chip and Agnes Hailstone set up camp for future resource gathering. Andy's trip to his woodpile doesn't go as planned.

On the cusp of springtime, Alaskans encounter unexpected roadblocks in their struggle for survival. Glenn Villeneuve injures his foot while traveling in deep snow.

As winter comes to a close, Glenn hikes up a mountain to build a snow cave. Meanwhile, in Kiwalik, the Hailstones tow a sled load of meat and a broken snow machine back to Noorvik.

Shondie examines two dogs after suspicions one has swallowed a battery, David tries to help a sick calf, an ex-race horse needs Tom's assistance, and William uses acupuncture on collie Lassie.

David helps a cow in labour with twin calves, Rebecca deals with a badly prolapsed ewe, Shondie treats a border collie hit by a quad bike, and Bridget must help a rabbit with a nasal abscess.

Many think David Attenborough has retired; now he launches a new era of natural history filmmaking as he revisits locations and uses advanced technologies to tell stories about the natural world.

This episode follows David Attenborough's adventures across the globe from the Galapagos Islands to the deepest caves in Borneo.

Our night train travels through the mystical midnight sun past the most diverse Norwegian landscapes. We meet people who want to restore the balance in nature in their own way.

Winter in Scandinavia is characterised by the polar night, months in which the sun is barely visible; this episode shows how people, animals and plants adapt to these extreme conditions.

The longest day of the year is celebrated throughout Scandinavia at the end of June; in this episode, we witness how animals and plants adapt to the challenge of the polar day.

Rodolphe dives into icy waters from the Salish Sea to Norway to see if we can live with killer whales, intelligent and family-driven - yet feared - predators whose fate is closely tied to ours.