Let your favorite local dance krewe lure you into depths of the ocean at the Sirens of New Orleans annual Halloween party fundraiser -- Mermaids and Mayhem: 20,000 Screams Under the Sea! Put on your best costume and join the fun at Southport Hall on Saturday, Oct. 12 at 8 p.m. Proceeds benefit The Coalition to Restore Coastal Louisiana, which works to rebuild and restore the state’s coastline. Tickets are on sale now, starting at $50 per person, and include an open bar serving a variety of beer, liquor, wine, champagne, frozen drinks and an exclusive Siren Signature Cocktail. Favorite local restaurants will provide light bites and snacks. Attendees will have a chance to win a trip to Las Vegas or Cancun in surprise fun games. And the highlight of the night is a scary fun dance party, where you can boogie until you drop and enjoy a special performance by the Sirens of New Orleans. The Sirens also invite the entire New Orleans community to help raise funds through an online auction for highly coveted experiences, merchandise, local art, cuisine, health and wellness packages and more.