Preheat a large nonstick skillet over high heat. Pat tuna steaks dry and season with a little coarse salt. Drizzle extra virgin olive oil over tuna and lightly coat steaks on both sides. Coat 1 side of the steaks with a generous amount of coarse ground black pepper.
When the pan is very hot, add steaks, peppered side down. Sear and brown steaks 2 minutes, then turn, and immediately reduce heat to medium. Loosely cover pan with aluminum foil tent and allow steaks to cook 5 minutes for rare, 7 minutes for medium. Steaks should be firm, but have a little give and some pink should remain at the center.
Serves 4