Passengers on a whale watching boat off the coast of Dana Point captured a once-in-a-lifetime sighting: a gray whale giving birth!

ATLANTA - The world's largest aquarium is expecting the pitter patter of giant fins. The Georgia Aquarium has a rare beluga whale pregnancy, the first mammal to conceive at the downtown Atlanta ...

For the aquarium staff, every birth is significant and the first beluga born at Shedd in four years was no different.

At birth, beluga whales are 5 feet long, roughly 100 pounds, and dark blue-gray in color. Unmistakable as adults, their color lightens to white, and they have a dorsal ridge rather than a fin.