With the help of her "uncles" and the thousands of humans who love and admire her, Acorna has found her true people, the peaceful, telepathic Linyaari.

“[Anne] McCaffrey here adds yet another dimension to her colorful and vivid saga by focusing on the attractive dolphins and their highly believable society.”—Publishers Weekly
When the first humans came to settle the planet Pern, they did not come alone: intelligence-enhanced dolphins also crossed the stars to colonize Pern’s oceans while their human partners settled the vast continents. But then disaster

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The homeworld Acorna has never known was horribly scarred in the brutal attack by the cold-blooded Khleevi, but the Linyaari -- the unicorn girl's gentle, spiritual race -- live on. Now is the time for healing and rebuilding, for restoring the natural beauty corrupted by the savage insectile oppressors. But Acorna's Linyaari friends and colleagues begin mysteriously disappearing soon after work gets under way, among them her beloved Aari. And her...

"Yanaba Maddock's short-lived career as a company spy had ended the moment the planet Petaybee and its people had adopted her as one of their own. Now she was dedicated to keeping Intergal from exploiting and wounding--or even killing--the world she had come to love. For Intergal persisted in denying that Petaybee was sentient, and nothing would stop it from stripping the ore-rich planet--sentient or not. Only solid evidence would convince the company...

Acorn's people, the Linyaari, have started to reclaim their homeworld from the ravages of the brutal alien Khleevi. But the expedition has unlocked a larger mystery about the origins of the Linyaari poeple--one that led Aari, Acorn's beloved lifemate into a dangerous journey through time and space-A journey from which Aari may never return.--Book Jacket

Xhinna, the first female Weyrleader, and her group of young dragonriders struggle to rebuild the decimated dragon population and protect the world from a deadly alien spore by collecting dragon eggs and protecting baby dragons from predators and saboteurs.

Tired of his boring life, Lord Jaxom decides to secretly train his extraordinary dragon to take part in the desperate battles of dragons and their riders against the Threadfall that periodically threatens their planet.

While the deadly Thread continues to fall, F'lar must combat internal conflicts among the dragonriders.

Forbidden by her father to indulge in music in any way, a girl on the planet Pern runs away, taking shelter with the planet's fire lizards who, along with her music, open a new life for her.

For generations, the dragonriders had dedicated their lives to fighting Thread, the dreaded spores that rained from the sky to ravage the land. Now, for the first time, their dream to eradicate Thread could possibly come true as they uncovered the ancient colonist's voice-activated artificial intelligence system which still functioned and instructed them on how to annihilate Thread.