BBC Earth Ken O'Sullivan explores the dark ocean waters to the north of Ireland in winter time, encountering monstrous winter storms of the high latitudes. 2026-08-28 A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges. 2026-08-28 Simon revisits the incredible characters he's met during his travels. 2026-08-28 Battle your way through Earth's second-greatest rainforest; follow Simon across 500 miles of dense tropical jungle full of biting insects and peat bogs to reach the Salonga region; enjoy an emotional encounter with a group of wild bonobos. 2026-08-28 Simon travels through Brazil, from the heart of the Amazon to the city of Rio de Janeiro. 2026-08-28 2026-08-29