Over the weekend, the “Aquaman” star shaved his head to highlight the issue of single use plastics. In the video on Instagram, he held up his cut braids and explained "Shaving off the hair,. Doing it for single-use plastics. I'm tired of these plastic bottles, we gotta stop. Plastic forks, all that s**t. S**t goes into our land, goes into our ocean. The things in our ocean, it's just so sad. So, please, anything you can do to eliminate single-use plastics in your life. Help me."