白领单词:英语高手帮忙翻译（7）

To Catch a Seal
Netting the agile, intelligent and aggressive animals for study requires stealth…and lots of fancy footwork
Clad in heavy rain gear, zoologist Rolf Ream peeked over the rim of a rock outcrop and watched the shifting, milling bodies across a 100-yard stretch of beach at Vostochni Rookery. Tonya Zeppelin, a biologist, crouched beside him, scanning the herd with binoculars. “There,” Zeppelin said. “I see her.”
A female seal with cellphone-size satellite and radio tags glued to her outer fur lay on a rock nursing a pup. She is one of 39 animals in a study to uncover more detail about where lactating females on St. Paul and St. George travel during foraging trips away from their newborn pups. Such research by Ream and others has already found, among other things, that adult males likely “cue” off currents to find their way across vast reaches of ocean, that seals from particular rookeries and islands forage in different areas, sometimes hundreds of miles apart. They’ve also discovered that young males range father than lactating females and that pregnant females sometimes roam halfway across the North Pacific in their winter-long quest for food. Ream in collaboration with another scientist, has also started a tracking study to compare the migration and condition of the declining herd on St. Paul with seals 200 miles to the south on Alaska’s volcanic Bogoslof Island, whose tiny but thriving population may be increasing by more than 50 percent per season. “Even one of them is feisty,” says biologist Jim Thomason (right, with Rolf Ream and Tonya Zeppelin) of his seal subjects. “Even one of them you pick up tries to bite you.”