An Inconvenient Benchmark

In An Inconvenient Truth and elsewhere, Al Gore is on record predicting that a sea level rise of 20 feet is a realistic short-term prospect. This mantra drones on despite the fact the IPCC's current estimate, prepared by Global Warming enthusiasts, predicts a worst case end of century sea level rise of about 1/30 of the Gorean doomsday scenario.

John L. Daly has something to show the warmers, particularly Al Gore.

The 1841 sea level benchmark (centre) on the `Isle of the Dead', Tasmania. According to Antarctic explorer, Capt. Sir James Clark Ross, it marked mean sea level in 1841. Photo taken at low tide 20 Jan 2004.
Mark is 50 cm across; tidal range is less than a metre. © John L. Daly. (Emphasis added.)

Look closely for this symbol marking the benchmark inscribed in the rock just slightly left of center of image: ___V___

I can't find the permalink for this photo post at John Daly's website, but as of April 21, 2007 it's the latest update, captioned: Last update - 2155 GMT, 31st Mar 2007.

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Actually, the sea level dropped for a while during the mid-1990s.

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