Scarborough's soft, sandy beach is divided into two, North and South Bays, by the Castle headland. While both beaches are award winning and Marine Conservation Society Recommended, the South Bay is the busier, with amusement arcades and a host of activities on and off the beach. The sea is sheltered by the headland here so swimming is safe in calm waters. Boat trips are available from the harbour. North Bay is much quieter, and backed by hills and cliffs. There are still many water sports activities taking place here, including surfing and jet skiing, and zoning is in place for visitors' protection.