Sharks are seen as ocean killers, but are they? Rodolphe Guignard dives with them in Florida and the Bahamas while revealing surprising interactions and questioning if coexistence is possible.

A student chronicles 2017's Hurricane Maria as it decimates Puerto Rico. A hailstorm destroys a Dallas family home. A wilderness hiker clings on for dear life in a flash flood.

Jeremy travels to Argentina to investigate the death of a young girl; once there, he discovers a creature known locally as 'River Dog', a river monster that somehow got under his radar.

The team take a paddle boat out for a rescue, a hunt for a sneaky gator ends in chest-deep water, and a gator with an eye problem gets a check-up.

Two US Army veterans help Gary with a rescue at the park, and Arlie and Blue wrangle a feisty gator out of a dangerous situation.

Rodolphe Guignard explores how humans and crocodiles coexist in close quarters In Mexico; despite primal fears, he discovers these ancient reptiles to be curious, peaceful, and rarely dangerous.

Jeremy travels to Brazil's 'wild west' in search of a river monster that has killed three cowboys; he has to combat all his fears to catch this culprit when one is finally cornered.

Repairs, hunting and errands are all on the to-do list as five Alaskans struggle to get through the everyday grind as the long, dark winter looms ahead.

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.

We dive into the planet's fiercest aquatic battlegrounds. From jaguars hunting caiman in the Pantanal to venomous platypus duels. Across continents, creatures fight to rule their watery domains.

Repairs, hunting and errands are all on the to-do list as five Alaskans struggle to get through the everyday grind as the long, dark winter looms ahead.

North California is besieged by a spate of raging wildfires. In Costa Rica, a tourist pleasure boat capsizes and in North Carolina, a tornado hits a superstore packed with shoppers.

Jeremy travels to Brazil's 'wild west' in search of a river monster that has killed three cowboys; he has to combat all his fears to catch this culprit when one is finally cornered.

Repairs, hunting and errands are all on the to-do list as five Alaskans struggle to get through the everyday grind as the long, dark winter looms ahead.

Belgium's forests hide some unusual behaviour; antlions violently pull their prey into sand funnels to feed their larvae while carnivorous sundew plants trap unwary insects with their slimy tentacles.

Rodolphe Guignard explores how humans and crocodiles coexist in close quarters In Mexico; despite primal fears, he discovers these ancient reptiles to be curious, peaceful, and rarely dangerous.

Jeremy heads to a remote river in the Australian outback to try and catch the rare but fearsome freshwater sawfish; this shadowy predator is said to reach 18 feet long and attack boats.

The looming arrival of dark winter forces Alaskans to tackle various obstacles to ensure a prosperous season. Andy hunts in order to replenish his meat supply. Sue confronts her greatest fear head-on.

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.

We dive into the planet's fiercest aquatic battlegrounds. From jaguars hunting caiman in the Pantanal to venomous platypus duels. Across continents, creatures fight to rule their watery domains.

The looming arrival of dark winter forces Alaskans to tackle various obstacles to ensure a prosperous season. Andy hunts in order to replenish his meat supply. Sue confronts her greatest fear head-on.

North California is besieged by a spate of raging wildfires. In Costa Rica, a tourist pleasure boat capsizes and in North Carolina, a tornado hits a superstore packed with shoppers.

Jeremy heads to a remote river in the Australian outback to try and catch the rare but fearsome freshwater sawfish; this shadowy predator is said to reach 18 feet long and attack boats.

Belgium's forests hide some unusual behaviour; antlions violently pull their prey into sand funnels to feed their larvae while carnivorous sundew plants trap unwary insects with their slimy tentacles.