An updated framework to protect marine life in the regions outside national boundary waters, known as the high seas, had been in discussions for more than 20 years, but previous efforts to reach an agreement had repeatedly stalled. The unified agreement treaty, which applies to nearly half the planet's surface, was reached late Saturday. "We only really have two major global commons — the atmosphere and the oceans," said Georgetown marine biologist Rebecca Helm. While the oceans may draw less attention, "protecting this half of earth's surface is absolutely critical to the health of our planet."