Instead, she had a terrible dream that she was in the ocean and a huge wave crashed over her. She couldn't get back to the surface as wave after wave pounded her down. She was fighting, losing, drowning.
She awoke her heart racing. It felt so real. "Great, just what I need," she thought. "Misery in the day and nightmares at night."
Dreams of Drowning: You're Overwhelmed
Other examples include tidal waves and tsunamis. Common ones I hear are "A tidal wave was headed straight for me." Or "The tsunami hit my town and wiped it away. Only me and my children esacped. It was horrible!"