1983’s Startide Rising is the second novel set in David Brin’s Uplift universe. It is also a standalone.
There’s always a certain risk inherent mentioning this author or his books because he is known to show up in online venues to offer unrequested commentary should the review deviate from truth as he sees it. However, it seems a pity to skip a book I enjoyed just because of a minor authorial quirk1. So, allons‑y!