BAR HARBOR — Students from Greely High School in Cumberland and Mt. Ararat High School in Topsham took the top spots at the Maine State Science Fair held Saturday at The Jackson Laboratory.

Meagan Currie, a Greely freshman, won the grand prize with a project that studied the oxygen production of brown and green seaweeds under different colored lights.

Meagan and second-place finisher Sam Wood of Mt. Ararat High will be the first Maine high school students to participate in the INTEL International Science Fair, to be held in May in Pittsburgh.

Jackson Lab took over coordination of the state fair in 2010. The lab received applications from 153 students from 10 high schools and several home-schooled students this year – a 47 percent increase over 2011 registrations.

Other participants represented Deer Isle-Stonington High School, George Stevens Academy in Blue Hill, Lawrence High School in Fairfield, Maine School of Science and Mathematics in Limestone, Morse High School in Bath, Mount Desert Island High School, Scarborough High School and Thornton Academy in Saco.

Sponsors included Bank of America, The Betterment Fund, Sam L. Cohen Foundation, Dorr Foundation, University of Southern Maine, Northeast Institute of Food Technologists, Bowdoin College and Hannaford Supermarkets.