Alberta (Canada) high-school student Bronwyn Delacruz loves sushi, but became concerned last summer after learning how little food inspection actually takes place on some of its key ingredients.

The Grade 10 student from Grande Prairie said she was shocked to discover that, in the wake of the 2011 Fukushima nuclear disaster in Japan, the Canadian Food Inspection Agency (CFIA) stopped testing imported foods for radiation in 2012.

So, she decided to carry out her own tests.

Armed with a $600 Geiger counter bought by her dad, Delacruz studied a variety of seafoods – particularly seaweeds – as part of an award-winning science project that she will take to a national fair next month.

“Some of the kelp that I found was higher than what the International Atomic Energy Agency sets as radioactive contamination, which is 1,450 counts over a 10-minute period,” she said. “Some of my samples came up as 1,700 or 1,800.”