Cut large scallops into 3 or 4 pieces, leave small scallops whole.
Arrange scallops into a bowl; pour in lime juice and cover the bowl.
Marinate scallops at room temperature, stirring from time to time, for 3 hours.
Drain scallops, throwing away marinade.
Mix together, well, drained scallops, shrimps, chopped red onion, parsley and hot pepper, ground black pepper, oregano, cherry tomato quarters and olive oil.
Cover and refrigerate for 1 hour, before serving