![Abyssal Echoes [English, Middle] 1963159462 Book Cover](https://i.thriftbooks.com/api/imagehandler/l/71E53378D3CD3975241052F0BA0CFAAF08F89CBF.jpeg)
Captain Maria Sanchez and Dr. Robert Sullivan lead a daring expedition aboard the research sub Pacifica to uncover the deepest ocean secrets. Among their breathtaking finds ancient stone ruins, hinting at a long-lost civilization. But before they can investigate, a mammoth...