On our final day of this wonderful week, we entered again into the breeding territory of the migratory gray whales, at the northern end of Magdalena Bay. The area, known as the estuary of Puerto Adolfo Lopez Mateos, is where mothers use the interior of this channel to stay protected and raise their newborn calves. During lunch, we sailed back down the Hull Canal with the assistance of our local pilots and we went for the last adventure, across the sand dunes at Magdalena Bay, to visit Sand Dollar Beach.