Stay at the crash place.
You should be calm.
Don't panic. Help are run in way!
Remember that help are run in way! Everything will okay!
Try to find water! Don't forget, water is necessary for your body.
Keep a little backpack with you.
Try to keep a little backpack with first aid kit and warm clothes with you!
Life guards will look for you at the place of crash. Try to stay near the crash site.