4 David Brin SciFi Novels, 1st 4 books in the Uplift War series

Startide Rising-1983  bk 2 in the Uplift Saga

The Uplift War-1995  bk3 in the Uplift Saga

Sundiver-1995 bk1 in the Uplift Saga

Bightness Reef-1996 bk4in the Uplift Saga