BBC Earth (HD) In Japan's southern islands, Robson Green meets the lethal black-banded sea snake. 2026-11-10 The trio are inspired to step out of their own comfort zone as they prepare to emulate Isabella's most impressive feat - summitting a 14,000ft mountain. 2026-11-10 The open ocean is the largest wilderness on earth. Covering more than half of the planet's surface, it appears to be an endless blue desert. Yet hidden here are some extraordinary animals. 2026-11-10 The remarkable animal drama in fresh water, the lifeblood of our planet. 2026-11-10 Robson Green walks a beautiful but lesser-known route in the Douro Valley in Northern Portugal, rich in ancient art, wildlife and world-famous wine. 2026-11-10 The trio are inspired to step out of their own comfort zone as they prepare to emulate Isabella's most impressive feat - summitting a 14,000ft mountain. 2026-11-10 In Japan's southern islands, Robson Green meets the lethal black-banded sea snake. 2026-11-10