The youngster made headlines a year ago when he raised more than R30,000 to support the Umgeni River Bird Park in Durban.
A beach clean-up with his mom when he was six, as well as a school play in which he played the part of an orca, ignited Romario's passion for the environment and he has since completed 150 beach clean-ups.
"I have always cared for nature and our planet. When I was six years old I discovered that orcas were endangered and I decided to do something about it by cleaning the beach weekly," he said. "My mother was the first person to clean the beach with me."
"I want to encourage children to plant trees, do not litter, recycle, reuse and only buy things you need. Let's work together to save our beautiful planet."
Last September, Romario became the youngest ambassador for Ocean Sole, a Kenyan company that recycles flip-flops washed ashore on the beach and transforms them into marine and wildlife sculptures.
And last month he was selected by the UN Convention to Combat Desertification to highlight climate change and land degradation at a desertification and drought day.