Choose products that are biodegradable and eco-friendly to reduce pollution in the sea. 5. Support sustainable seafood practices: Choose seafood sources that are sustainably harvested and avoid consuming endangered species. 6. Respect marine life: Avoid disturbing or damaging marine ecosystems by not touching or feeding wildlife, and staying a safe distance from coral reefs. 7. Educate others: Spread awareness about the importance of keeping the sea environment clean and encourage others to take action.