Original by Shital Bhanushali | Edited version by Danai Dapola & Marta Guerra Gonzalez
Did you know that your sunscreen could be harming aquatic ecosystems such as coral reefs? Yes, you heard it right. Surprising as it sounds, common sunscreens containing chemicals, such as UV filters, can damage marine ecosystems. When combined with sunlight, these chemicals can contribute to coral bleaching and threaten marine life. In fact, about 14000 tons of sunscreen are washed into the sea each year.
Coral reefs are not just beautiful—they are vital to marine biodiversity. Unfortunately, when exposed to the harsh chemicals in many sunscreens, corals can suffer DNA damage, hormonal disruption, and even death. This makes reef degradation a global concern that starts with individual choices.
So, what can we do to enjoy the sun while protecting our beautiful underwater ecosystems? The answer lies in reef-friendly sunscreens!

What Is Reef-Safe Sunscreen?
These are water-resistant formulas that exclude oxybenzone and octinoxate, two of the most noxious chemical compounds metabolized by sea creatures. These compounds have extremely harmful effects on the coral reefs to the point that certain legislations were passed down to prevent their usage.
Let’s dive deeper into these effective alternatives that can help keep our oceans vibrant and alive.
How to Choose an Ocean-Friendly Sunscreen
Here are some key tips to selecting reef-safe sun protection:
- Avoid Oxybenzone and Octinoxate: These are the top culprits in coral reef damage. Make sure you always read the ingredient label.
- Look for Certifications: Trusted seals from groups such as the Environmental Working Group (EWG) or NOAA ensure safety for both the skin and the sea.
- Check for Other Harmful Additives: Choose products free from parabens, phthalates, and synthetic fragrances.
- Use Water-Resistant Formulas: These reduce the amount of sunscreen entering marine environments.
Why It Matters
In response to this environmental threat, places like Hawaii have banned the sale of sunscreens containing oxybenzone and octinoxate, a law that took effect in January 2021. Other coastal regions are following suit.
Making the switch to reef-safe sunscreen is a small, effective action with a huge environmental impact. By protecting your skin and choosing eco-conscious products, you are also helping safeguard the world’s fragile coral reef ecosystems.