Man Bites Shark

As if terrorism, warfare, and diseases weren't scary enough, the past year has offered some ominous signs of an impending shark invasion into the waters where we swim, surf, and play, as the number of sightings and unprovoked strikes on humans has ticked ever upward. The number of reported shark attacks worldwide increased 25 percent in 2010, to a total of 79, and warm-weather shark observations off the U.S. East Coast is rising, prompting beach closures last summer everywhere from Brooklyn to Cape Cod. In January of this year, a pilot flying off Palm Beach, Florida, saw literally thousands of sharks, capturing the swarm with his iPhone (and terrifying plenty of humans in the process). A month later, police reported that two great whites had killed a diver off the South Australian coast. And in June, a Cornish mackerel fisherman claimed that a 6-foot oceanic whitetip shark rammed his boat, setting off a British media frenzy. These developments seem to suggest that sharks pose a more serious threat to us now than they did before -- as if they're either expanding in numbers, or just more determined to get us.

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