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What the Heck Is This?

(Image credit: NOAA/Rear Admiral Harley D. Nygren)

Seeing just part of this image doesn't reveal much. But perhaps the blue tint gave you a hint?

It's a photo of an iceberg in the waters off Antarctica. See the full image below.

Icebergs are constantly breaking off the continent, in a process called calving. Often one huge iceberg — miles long — will float around, crash into things, and break into smaller icebergs over time.

Know why icebergs float? It's because they contain a lot of air — billions and billions of tiny, trapped bubbles.

This was the first installment of "What the Heck." 

Robert Roy Britt
Rob was a writer and editor at starting in 1999. He served as managing editor of Live Science at its launch in 2004. He is now Chief Content Officer overseeing media properties for the sites’ parent company, Purch. Prior to joining the company, Rob was an editor at The Star-Ledger in New Jersey, and in 1998 he was founder and editor of the science news website ExploreZone. He has a journalism degree from Humboldt State University in California.