To the 4th Annual Masquerade Mermaid Ball


Celebrating Our Ocean at the 4th Annual Masquerade Mermaid Ball!


The Masquerade Mermaid Ball was a magical evening on September 8 at The Riverside in beautiful downtown Boulder, Colorado. Guests mingled with other ocean lovers and celebrated our connection to the ocean and the amazing ability we all have to make a difference - no matter where we live.

There was delicious sustainable food, specialty cocktails and other drinks, live music by local band i.O. Underground, an online auction, costume contest, and mermaids!

All proceeds will support our mission of building land-to-sea stewardship. We do this through protecting our ocean, watersheds, and climate, and working to prevent plastic pollution.
Costume Contest

Bring your oceanic best to have a chance to win one of the three categories of our costume contest!

  • Best Couples Outfit 
  • Best Ocean-Ready Outfit 
  • Most Creative Creature



Parking is available across the street at the Boulder Public Library (west of The Riverside). Parking is free after 7pm and anyone who parks at the library gets 90 minutes of free parking so long as you input your license plate number into one of the parking machines.


Our Online Auction is LIVE!



Event Sponsors

Thank You to Our Sponsors!

If you'd like to be a sponsor, please click here or send us an email.

Shiver of Sharks

Pod of Whales

Shoal of Squid

Squadron of Pelicans

School of Fish

Food & Beverage Sponsors

Support the Mermaid Ball

If you can't make it to the event, you can still support the Mermaid Ball!