The Elders of Arkhide. Cooperative Realm

Ex-military operative Mondrian Delacroix thought her days of high-stakes missions were behind her. But when the reclusive augmented humans of Arkhide come calling with a puzzle even they can't solve, Mon finds herself unable to refuse. The assignment seems straightforward: travel to an underwater base and assist with a perplexing linguistic challenge. For years, the Arkhideans have been detecting strange signals from the depths of their oceans-patterns that defy conventional analysis and hint at something far beyond their understanding. As a rare individual with the ability to Listen-to "hear" far beyond normal human range-Mon begins to sense something in the strange transmissions that others have missed.
Something that could change everything. There's a world down here that no one in the Cooperative Realm has ever heard of. The Elders of Arkhide offers a fresh take on first contact stories in an immersive undersea world. Fans of Becky Chambers, C. J. Cherryh, and Julie E. Czerneda will love this novel.