Definitely you cannot miss Santa Pola beaches.
Two main beaches in Santa Pola are Playa de Levante and Gran Playa, which are lovely sandy beaches.
Actually all the beaches in Santa Pola are sandy beaches, having Blue Flag granted by the European Foundation for Environmental Education (FEE) and ADEAC, based in the Quality of water, services, compliance with environmental legislation, cleaning and security-related services for users.