Walking With Dinosaurs: Island of Giants (BBC One, Sunday, June 29, 2025)

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The final episode of Walking With Dinosaurs, Island of Giants, brings the first series to a close on BBC One, Sunday, June 29, at 6:25 PM. This installment transports viewers 150 million years into the past, centering on a Lusotitan, a colossal 25-meter-long sauropod. This creature, among the largest dinosaurs known, lived in what is now Portugal.

The focus here is singular: the male Lusotitan’s urgent quest to find a mate and continue his lineage. This drive sends him on a perilous trek across the ancient landscape of the Iberian Mesta, a region where he dwarfs nearly every other creature. The re-created world of the Late Jurassic Period presents dangers at every turn, forcing the massive animal to contend with rivals and environmental challenges in his search for love.

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This episode distills the raw drama of survival and reproduction in the prehistoric world. It’s a story about instinct and the fundamental drive to pass on genes. For those who appreciate natural history programs that blend scientific understanding with compelling narrative, this episode aims to satisfy.

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The narrative prioritizes the physical and instinctual challenges facing this immense creature. Viewers will experience the scale of its existence and the high stakes of its primary goal.

Isabelle aka Izzy Jacobs is the features editor at memorabletv.com. Isabelle is particularly drawn to crime dramas, but she also has a not so secret love for all things reality TV. In addition to her work at memorabletv.com, Isabelle is also an avid traveler and a devoted foodie.