Question

what is esuaries how they are suitable for both Marine and river fish to alive

Answer 1

HERE IS YOUR ANSWER,

Estuaries are a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it,and are a free connection to open sea.They are subjected both to marine influences such as tides,waves& the influx of saline water & to riverine influences such as flows of fresh water & sediments.

HOPE IT HELPS YOU