Mexico is a part of North America [1]. What is less obvious is whether Guatemala, Belize, Nicaragua, etc, would fall into N or S America. Central America is a region, like the Middle East, but is not its own continent. Central America is a part of North America [2]. Nathan made a good point that the United Nations considers Mexico a part of Central America [3]. I wonder why [4].
Sear each side, flipping minimally. It should not take long for a crisp brown crust to form. Depending on the heat of your pan, it should take about 2-4 minutes (or less) for each side to finish cooking. When the first side is done, flip your steak and cook the second side for about as long.
Combine Olive Oil, Old Bay, Lime and Lemon Juice. Mix Well. Pour over Tuna Steaks and marinade 20 minutes, turning occasionally. Make sure grill is hot â place steaks in hottest section and Sear steaks 1 to 2 minutes per side to seal in the juices. Finish cooking just slightly away from the hottest area â 8 to 10 minutes per inch of thickness.