Following the March 2011 meltdown at Japan's Fukushima Daiichi nuclear power plant, reactors have sprayed immeasurable amounts of radioactive material into the air, most of which settled into the Pacific Ocean. A study by the American Geophysical Union has found that radiation levels from Alaska to California have increased and continue to increase since they were last taken.

Naturalnews.com reports:

The highest levels yet of radiation from the disaster were found in a sample taken 2,500 kilometers (approx. 1,550 miles) west of San Francisco.

"Safe" according to whom?

Lead researcher Ken Buesseler of Woods Hole Oceanographic Institution was one of the first people to begin monitoring Fukushima radiation in the Pacific Ocean, with his first samples taken three months after the disaster started. In 2014, he launched a citizen monitoring effort – Our Radioactive Ocean – to help collect more data on ocean-borne radioactivity.