To protect your GoPro action camera from scratches and bumps, put it in a casing. You also have waterproof casing, these make the GoPro suitable for filming underwater at great depths. You can use the GoPro Floaty to float the GoPro on the water. It won't sink if you accidentally drop it in the sea. These accessories are useful when you travel. You can replace the spare parts if a part of your GoPro is broken. For example, the cover of the battery compartment.