The term “reef-safe sunscreen” has become a buzzword in eco-conscious travel, but the truth is more complicated. Despite marketing claims, no sunscreen is truly safe for coral reefs or marine life. Even products labeled as “reef-safe” contain chemicals that can harm fragile underwater ecosystems. At Sand Dollar Sports, we are passionate about preserving Cozumel’s vibrant coral reefs. Here’s why sunscreen—of any kind—can damage marine life and how you can help protect these underwater treasures.
How Sunscreen Damages Coral Reefs
Research shows that common sunscreen ingredients, such as oxybenzone, octinoxate, and even some mineral-based filters, can harm coral reefs in several ways:
- Toxic to Coral Larvae: These chemicals can cause coral bleaching by disrupting the symbiotic relationship between coral and the algae they rely on for nutrients.
- Deformities in Marine Life: Sunscreen chemicals can accumulate in marine organisms, leading to developmental issues and affecting reproduction in species such as fish and sea urchins.
- Water Pollution: Even small amounts of sunscreen wash off swimmers and snorkelers, creating a concentrated impact in popular tourist areas like Cozumel’s Marine Park.
Cozumel Marine Park Bans All Sunscreens
To combat these threats, Cozumel Marine Park has implemented a strict ban on all sunscreens use in the water, including reef-safe sunscreen. This regulation underscores the urgency of protecting coral reefs from human impact. Compliance with this rule ensures that visitors contribute to the preservation of one of the world’s most biodiverse marine ecosystems.
Sun Protection Alternatives
Protecting your skin from harmful UV rays doesn’t have to come at the expense of coral reefs. Here are sustainable alternatives:
- Wear Protective Clothing: Long-sleeve rash guards, wetsuits, and wide-brimmed hats provide excellent sun protection without introducing harmful chemicals into the water.
- Limit Sun Exposure: Avoid being in direct sunlight during peak UV hours, typically from 10:00 AM to 3:00 PM. Seek shade or plan water activities early in the morning or late in the afternoon.
- Hydrate and Stay Cool: Drink plenty of water and use cooling towels to stay comfortable without relying on chemical-laden products.
The World’s 4th Global Bleaching Event
In 2025, scientists have declared the world’s 4th global bleaching event, a devastating phenomenon affecting coral reefs across the planet. Rising sea temperatures, driven by climate change, are the primary cause of coral bleaching. When water temperatures remain too high, corals expel the symbiotic algae that provide them with nutrients and their vibrant colors. This leaves the coral weakened and more susceptible to disease, often leading to widespread die-offs. This global crisis highlights the critical need for immediate action, including reducing human impacts such as sunscreen pollution and supporting reef restoration efforts.
Sand Dollar Sports’ Commitment to Coral Reef Restoration
At Sand Dollar Sports, we take marine conservation seriously. We are proud to be a Green Fins digital member and a Travelife certified tour operator, reflecting our commitment to eco-friendly and sustainable practices. By following these sun protection guidelines, you help us minimize human impact on Cozumel’s coral reefs. Our team actively participates in coral reef restoration programs, such as the Cozumel Coral Reef Restoration Program at Villa Blanca Reef. We also maintain artificial reefs, like Reef Balls and the Zoe Living Sea Sculpture, as part of our sustainability initiatives.
Together, We Can Protect Our Oceans
Your choices matter. By skipping sunscreen and adopting eco-friendly sun protection habits, you help preserve the coral reefs and marine life that make Cozumel so special. Join us in protecting these underwater wonders for future generations, and together, we can ensure that Cozumel’s reefs remain vibrant and thriving.
Ready to dive deeper? Take the Green Fins diver e-course online! Explore our reef restoration tour or book some scuba diving during your next visit to Sand Dollar Sports. A truly sustainable business in Cozumel!