For a delicious and healthy meal, try this soy sauce marinated tuna steak recipe. The soy sauce adds a savory and slightly sweet flavor to the tuna, while the marinade helps to keep the fish moist and tender. Simply marinate the tuna steaks in a mixture of soy sauce, sesame oil, garlic, and lime juice for about 30 minutes. Then, grill or pan-sear the tuna until it is cooked to your desired level of doneness. Serve it with a side of stir-fried vegetables or a fresh salad for a light and flavorful meal.