Constructive v Destructive Waves

• Constructive waves are shorter than destructive waves
• Constructive waves are longer than destructive waves
• Constructive waves have a lower wave frequency than destructive waves
• Constructive waves have a spilling wave break while destructive waves have a plunging wave break
• Constructive waves have a stronger swash than backwash
• Destructive waves have a stronger backwash than swash
• Beach sediment is gained with constructive waves while it's taken away with destructive
• Constructive waves form sandy beaches
• Destructive waves form pebble beaches which have a steep beach profile