“Just letting you all know that I’m off the coast of Nantucket a little south from where I was tagged,” Andromache tweeted on Tuesday. AdvertisementThe OCEARCH team tagged Andromache during a research trip called Expedition Massachusetts, which launched earlier this month. The second great white that OCEARCH tagged, dubbed Monomoy after the island he was spotted near, measured 6 feet, 7 inches long — smaller than most sharks that have been observed in the area. “At 6′ 7″ long, he’s the smallest shark we’ve tagged in this area,” OCEARCH tweeted. “It was a male white shark less than 7 feet long.