Fly Fishing Magdalena Bay Part II November 20, 2019 nick price Striped marlin. Magdalena Bay, Baja, Mexico John Huber stands on these amazing sand dunes after hopping out of our panga at the terminus of a mangrove river. Magdalena Bay is a place of incredible contrasts: Cactus, mangroves, dunes, and the bay itself coupled with the blue water beyond the bay. Then there are the small dusty towns not on the tourism radar.