The Petaybee Series is a series of young-adult science fiction novels by Anne McCaffrey

Anne McCaffrey

Anne Inez McCaffrey was an American-born Irish writer, best known for her Dragonriders of Pern series. Over the course of her 46 year career she won a Hugo Award and a Nebula Award...

 and Elizabeth Ann Scarborough

Elizabeth Ann Scarborough

Elizabeth Ann Scarborough was born March 23, 1947 and lives in Port Townsend, Washington. Scarborough won a Nebula Award in 1989 for her novel The Healer's War, and has written more than a dozen other novels...

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Powers trilogy

The first Petaybee series, the Powers trilogy, consists of three books: Powers that Be published in 1993, Power Lines (1994) and Power Play (1995).

The series centers on Major Yanaba (Yana) Maddock, a disabled soldier sent to the glacial planet of Petaybee as a spy. Petaybee turns out to be a planet awakening to sentience

Sentience

Sentience is the ability to feel, perceive or be conscious, or to have subjective experiences. Eighteenth century philosophers used the concept to distinguish the ability to think from the ability to feel . In modern western philosophy, sentience is the ability to have sensations or experiences...

; Yana's goal becomes protecting the planet from corporate exploitation.

Twins of Petaybee trilogy

The book Changelings (2005) is the first of a trilogy called The Twins of Petaybee which begins where Power Play leaves off. It concerns the twin children of Yana Maddock and Sean Shongili, the selkie

Selkie

Selkies are mythological creatures that are found in Faroese, Icelandic, Irish, and Scottish folklore....

geneticist. The second book in the series, "Maelstrom," was published in 2006. The third book, "Deluge," was released in February 2008.