Blue whales’ diet and exercise rolled into one

Marine predator performs underwater acrobatics for best chance at catching a meal

By Susan Milius, 10:27 AM November 28, 2012

To catch a skittish lunch, blue whales roll their massive bulk over and do a belly-up lunge if that’s what it takes.

Video cameras and high-tech tags stuck to whales’ backs revealed the underwater acrobatics that let the world’s largest living predators survive on some of the tiniest prey, says Jeremy Goldbogen of the Cascadia Research Collective in Olympia, Wash.

Blue whales manage to grow to about 30 meters in length (longer than two school buses put together) just by opening their huge...

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