Discovery Channel HD 'S7/E14 - Bench Marks'. Oscar sends The Cheals on an important mission to unearth a rare green-orange gemstone for a potential buyer. The Mooka Boys get a motor problem. 2026-08-15 'S1/E5 - Only The Strongest Survive'. A swan with a fish hook caught in its mouth requires a light touch from the RSPCA. A group of ducklings are found covered in oil by some railway tracks. 2026-08-15 'S1/E5 - Izzy The Koala Whisperer'. A family who dedicate their time rescuing animals in Australia, release Crickey the koala back into the wild after a year of nursing him back to health. 2026-08-15 Wildlife biologist Forrest Galante explores America's strangest alien sharks in celebration of the nation's 250th anniversary. 2026-08-15 'S12/E1 - Alone And Terrified'. For the first time ever, two survivalists are forced to spend the first night of their 21-day challenge in the wilds of Botswana completely alone. 2026-08-15 'S12/E2'. Forced to trek two days to a water source, a laid-back hunter and an opinionated adventurer clash in Zambia, risking their 21-day challenge. 2026-08-15 'S12/E3 - Predatorland'. A hairdresser and a former correctional officer try to survive 14 days in Zambia, where a herd of aggressive elephants stalks them. 2026-08-15