Roberta Mancino travels to Mexico in search of the Sailfish, the fastest fish in the ocean. This massive fish reaches speeds of 110km/hr and with a sword-like bill to avoid, this is one tricky fish to deal with! It proves a difficult task even tracking it down - manta rays and other ocean giants make an appearance along the way. Eventually they find this incredible creature, and the end result is absolutely stunning. Watch as Roberta swims with these incredible fish.
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