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A Louisiana aquarium welcomed a baby shark born under mysterious conditions, the aquarium said Friday. The swell shark, nicknamed Yoko, hatched on Jan. 3, according to the Shreveport Aquarium.

1. Grab a grown-up and begin by cutting a slice of the watermelon, on an angle. This is so your watermelon shark will sit steadily and appear as if it is coming up out of the water (save the piece ...