Science

Tracker on Twitter shark ‘Mary Lee’ falls silent in the Atlantic

Off Cape Cod, OCEARCH researchers tag Mary Lee, a Great White Shark. OCEARCH

JACKSONVILLE, Fla. (AP) — The transmitter attached to a great white shark being tracked on Twitter has fallen silent.

The research group Ocearch says the transmitter on the shark known as Mary Lee has not sent a signal since June 17, when she was swimming off the New Jersey coast.

Founding chairman Chris Fischer and his crew caught and tagged the 16-foot shark off Massachusetts in 2012. Since then, thousands of people have followed Mary Lee on a Twitter page managed by Ocearch .

In a Florida Times-Union report , Fischer said the transmitter’s batteries simply may have died, partly because Mary Lee surfaced frequently, which triggered more signals.

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Fischer said he expected Mary Lee to live another 20 years.

An Ocearch vessel will depart Jacksonville University next month to search for additional sharks to tag.

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Information from: The (Jacksonville) Florida Times-Union, http://www.jacksonville.com