What is the first thing you should do when your boat runs aground?

When your boat runs aground, the first thing you should do is assess the situation to ensure everyone's safety and check for any potential damage to the vessel. If the boat is stable, turn off the engine to prevent further damage and avoid environmental hazards. Then, determine the tide conditions and consider your options for dislodging the boat, whether that involves waiting for the tide to rise or using a paddle or anchor to help. If necessary, signal for assistance.