Pre-heat your over on the bake and broil option to 210C - 410F
Cut the tuna steaks into squares, about 1 inch x 1 inch
Add the tuna pieces into a bowl
Add 1 Tbsp extra virgin Spanish Olive oil to the bowl, squeeze some fresh lemon juice and season with sea salt
Toss everything together until well mixed
Grab the olives and stuff each one with a caper
Add one stuffed olive to the wooden skewer and then a square of the tuna and repeat
Put the skewers on a baking sheet with parchent paper and add to the oven
After 6-7 minutes take the tuna skewers out of the oven
Place on a plate and serve with some lemon wedges