The writer joins a group of scientists on a shark tagging expedition in the Bahamas:
“Hammerschlag, 34, spends nearly every weekend out on the water in South Florida, armed with hooks, lines, and tags. As a result, he is intimately acquainted with the limits of current technology; most tags, he says, are too expensive and don’t last long enough. Two years ago, he partnered with Marco Flagg, an engineer, to develop a new device. The production version of the HammerTag, he says, will last years and maybe even decades attached to a shark; it will be hundreds of dollars cheaper; and it will provide a thousand times the data.
“Data, Hammerschlag says, will lead scientists to identify nurseries and hunting grounds for the first time. It will reveal life cycles to determine when the animals are most vulnerable. And with enough of it, conservationists could influence legislators. Without effective legislation, Hammerschlag says, shark populations will surely continue to decline—and the ocean with them.”