Donkey Kong Country: Tropical Freeze - Secret Exit Guide

World 1
Stage 1-2 - Shipwreck Shore, Requires Dixie
After the second checkpoint, where 3 grasshoppers are bouncing on boxes, jump into the water and swim down and through the current to the secret exit for 1-A

World 1 Stage 1-2 Shipwreck Shore
Swim down from here to find the exit.