8/11. Gladiators ready! Bradley and Barney Walsh welcome back four more steel-nerved Contenders to battle the indomitable Gladiators as they compete for the last semi-final places. Also in HD. [S,AD]
Tidelands: Head to America's far north for a peek at its waterway's fighters, as a spring thaw pits eagles against herons and dragonfly nymphs against venomous water bugs. (S1, ep 4) [S,AD]
Jungle River: Young gladiators earn their stripes in dense tropical forests. Stand back as a poison dart frog launches a toxic barrage and observe a jaguar-caiman turf war. (S1, ep 3) [S,AD]
Wild Coast: Go up against Australia's wiliest gladiators and their arsenals, from a kangaroo's deadly boxing moves to the redback spider's precision-engineered traps. (S1, ep 2) [S,AD]
The Waterhole: As the dry season brings a band of gladiators to an African savannah watering hole, see a territory brawl and one honey badger's risky dance with a snake. (S1, ep 1) [S,AD]
Tidelands: Head to America's far north for a peek at its waterway's fighters, as a spring thaw pits eagles against herons and dragonfly nymphs against venomous water bugs. (S1, ep 4) [S,AD]