1/4 Cup olive oil                                                                                  2 tsp. Cilantro, fresh or dried
4 tsp. Old Bay seasoning                                                                     1 pound of fresh Tuna steaks
Juice of 2 limes

Combine first four ingredients in a shallow dish or large Ziploc plastic bag, then add Tuna steaks.  Turn to coat.  Marinate for approximately 20 - 30 minutes.

Grill or broil to your liking, or until fish flakes easily with a fork.  Baste with marinade halfway through cooking.  Discard leftover marinade.