The more sea turtles there are pushing their way through the sand, the less energy each one has to use. The more energy they can save for their journey to the ocean, the more likely they are to actually make it there.
For baby sea turtles, having siblings actually helps to save their lives. They need support to make it through, and would literally be lost without each other.
Check out the full video of these baby sea turtles making their way into the world below: