Spend the day cleaning up the coastline at Kakaako beach, then stick around for a rock concert on Saturday (Aug. 10).

Sustainable Coastlines Hawaii is hosting the event on Saturday afternoon. Registration is at 1-2 p.m. at Kakaako Amphitheater. Help clean the coastline, whether it's picking up litter, cigarette butts or sifting out marine debris from 2 to 4 p.m. Please bring a reusable water bottle, reusable bags and reusable bags if you can (which will otherwise be provided).

From 4 to 7 p.m., enjoy live music by Tavana and Chaotic Five, plus food, keiki activities, educational booths and more.

Kakaako is becoming the new, hip and happening place, with a slew of new condos scheduled for construction over the next few years, along with new eateries, retail shops and food events like Eat The Street and Honolulu Night Market. This is Susatinable Coastline's first event in Kakaako.

Rocka‘ako is free and open to the public. If you won't be volunteering to clean up the coastline, a $10 donation is suggested for attending the concert. Visit sustainablecoastlineshawaii.org.