Claimed by the Hadal Depths

Marine biologist Dr. Morrow should never have survived the chamber incident.

Since returning from the depths, his body has been changing in ways no doctor can explain. Dry air burns his lungs. Salt has become a biological necessity. The deeper the ocean pressure, the more stable his transformed body becomes. And every night, the abyss calls him farther from the shore.

Unable to tolerate life on land any longer, Dr. Morrow descends into the hadal depths where sunlight dies and human technology fails. There, in the crushing blackness beneath the continental shelf, he encounters something ancient watching from the trench. Vast. Intelligent. Patient.

The Sovereign of the deep does not hunt him.

It recognizes him.

As Dr. Morrow surrenders to the abyssal intelligence and the ancient rituals hidden within the deepest waters on Earth, his transformation accelerates beyond humanity itself. Flesh reshapes for impossible pressure. New senses awaken in the dark. And beneath the ocean, surrounded by tentacled entities older than civilization, he discovers he was never meant to remain human at all.

Claimed by the Hadal Lifeform is a dark MM tentacle transformation romance featuring deep-sea horror, biological metamorphosis, abyssal claiming, ancient oceanic intelligence, non-human intimacy, and surrender to the crushing embrace of the deep.