Preheat oven to 400° F.
Put the diced shallot in a bowl with the vinegar, citrus juice, salt, and pepper. Allow to infuse for 10-15 minutes. Whisk in the olive oil. Adjust the seasoning to taste.
Salt the 8 scallops lightly on both sides and set aside.
Heat the corn oil in a non-stick skillet until almost smoking hot. Sear both sides of the scallops until crusted golden. Remove to a pan with a rack (sprayed with oil). Finish for 3-4 minutes in the preheated oven.
Dress the greens and place the scallops on top.
Chef's Notes:
Day boat scallops are always preferred as they are the freshest and have not been treated or frozen.