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Nigel follows the newborn grey whale calves during their first months of life at Baja’s San Ignacio lagoon.

Nigel Marven follows the grey whales up the Californian coast, spotting humpbacks, a unique fox and Californian condors en route.

As the whales swim further into the cold seas of the Pacific Northwest, Nigel joins the Quileute tribe for their annual whale-welcoming ceremony.

The whales are now on the final stretch of their journey, with Nigel accompanying them all the way to the Bering Sea.