The best of the best star in “Planet Earth: A Celebration,” which promises eight of the “most extraordinary” sequences from “Planet Earth II” and “Blue Planet II.” Among them: bottlenose dolphins surfing for what appears to be the sheer joy of it, as narrator David Attenborough describes it, and, on the less playful side, a snakes vs iguana showdown. The special, debuting 8 p.m. EDT Monday, Aug. 31, on BBC America, AMC, SundanceTV and IFC, includes new narration from Attenborough. Oscar-winning composer Hans Zimmer (“The Lion King”) and Jacob Shea, an Emmy nominee for the “Planet Earth II” score, created new music.

— AP Television Writer Lynn Elber

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