17.00 Challenge of the Seas: Tribes in the Sea, part 1. 17.30 Animals of the Mediterranean: The New Lords of the Castle. 18.00 High Five: Surfing. 18.30 On Top of the World: Taiwan. 19.00 Beyond 2000. 19.50 Only in Hollywood. 20.00 Durrell in Russia: Last of the Virgin Steppe. 21.30 Arthur C.