What do you do if a mega earthquake happens and you are at the beach? Run for the hills, right?! Knowing what to do, and actually doing it are two separate things, and that's why practice is so important. 
During the International ShakeOut! exercise, I participated in a tsunami drill with the South Tillamook County CERT team. I met new people and learned the routes to two tsunami assembly areas in Neskowin, Oregon. 
If you spend time at the beach, consider walking the evacuation routes as a practice; note how much time it takes you to vigorously walk to high ground. 

Check out this All-Hazards Preparedness Guide from the CDC. It covers basic information about getting prepared for a wide variety of situations, including: 

• Shelter-in-Place
• Advice for those with special needs
• Bioterrorism
• Chemical emergencies
• Earthquakes
• Extreme heat
• Hurricanes
• Landslides and mudslides
• Pandemic Influenza
• Tornados
• And more.