A cartel enforcer tells the brutal side of cartel drug enforcement.
(03:00)He buys Hash in Morocco and smuggles it into England on his body.
(03:05)Weed trafficker Clyde shows how he brings Humbolt Sour Diesel to the east coast.
(03:17)Humbolt Sheriff's Office cracks down on an illegal marijuana grow.
(02:59)The mayfly is born, lives through middle-age, and then dies. All in the same day.
(02:41)Red crab larvae hatch and head for dry land, covering Christmas Island's shores in delicate little crablings.
(02:22)A tragic and violent scene plays out as wildebeest herds attempt to cross a river teeming with crocs.
(02:59)Young cheetahs wait for newborn wildebeests, stalking them before the wildebeests begin their migration.
(02:56)Poole finds a WB stuck in the river - and it dies sadly.
(03:19)Building mathematical models to predict the behaviour of predator and prey.
(02:48)Martin talks about filming in the jungle with delicate equipment.
(01:32)Take a breathtaking ride on the tailwinds of billions of creatures swimming, marching and flying across the planet.
(02:10)Take a breathtaking ride on the tailwinds of billions of creatures marching, swimming and flying across the planet
(02:01)Richard and Jamie collect some sea snakes to help produce antivenom in order to save lives.
(02:54)The scientists venture in search of sea snakes at night, when they come to the surface to breed.
(03:08)The team captures as many sea snakes as they can, but they will use every last drop of their oxygen first.
(03:09)Jamie gets hurt by a stonefish, the world’s most venomous sea species.
(02:52)Richard and Jamie prepare for an incredible mission to help preserve the endangered sawfish.
(03:18)Jamie’s got a venom shopping list from one of his students back at the James Cook University.
(02:23)The team has serious car trouble. But if they can’t get back on the road fast, a sawfish could die.
(03:03)