brackish

All the ancient, fishy lamprey larvae were found in saltwater environments, Miyashita says, from brackish lakes to lagoons to offshore river deltas.

A brackish breeze blew off the Black Sea, mixing with rotting garbage, human sweat, cheap cleaning products, and undefined fumes.

I am bored to death, to extinction; my thoughts are the colour of that water which flows over yonder, brackish and heavy.

This animal is fond of brackish water, therefore he most commonly inhabits those rivers which border on the sea.