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The Jury is In–Chemical Sunscreens Are Guilty of Harming the Reefs.

It was just two years ago when scientists began increased discussions about the possibility of chemical sunscreens harming reef environments. Always at the forefront of reef preservation, the island of Bonaire, coordinated by STINAPA and funded by the island and national governments and WWF, commissioned research to further investigate this potential threat to reefs.
Dr. Diana Slijkerman of the Wageningen Marine Research Unit, in the European Netherlands, presented her findings at a recent Connecting People with Nature presentation by STINAPA. The use of chemical sunscreens is just one more threat to reef habitats around the world.

Reefs around the world are already stressed. They are dealing with many different threats, including:

Now humans are adding chemical sunscreens to the world’s already burdened reefs.

There are two main types of sunscreen.

Chemical Sunscreens.

Bonaire sunscreen awareness program.The popular ones used today are chemical-based. They might have, as their active ingredient, one (or possibly a combination) of these chemicals:

  • Oxybenzone
  • Avobenzone
  • Octisalate
  • Octocrylene
  • Homosalate
  • Octinoxate
  • Helioplex
  • Parsol 1789
  • 4-MBC
  • Mexoryl SX and XL
  • Tinosorb S and M
  • Uvinul T 150
  • Uvinul A Plus

Note these chemicals may be found under other names as well.

These chemicals do not block the sun’s rays like physical sunscreens, but instead, they allow the skin to absorb the UV rays, transforming them into non-damaging wavelengths of light or heat.

Physical Sunscreens.

Physical sunscreens prevent UV rays from hitting the skin at all, by creating a reflective barrier using naturally occurring minerals. (Remember the days when lifeguards smeared white-colored zinc oxide over their noses?) These reflective barriers simply bounce UV rays away, so no sunlight is penetrating into the skin:

  • Zinc Oxide
  • Titanium Oxide

Different strokes for different folks–various regions use different chemicals in their sunscreens.

Dr. Slijkerman’s research uncovered an unusual fact. By sampling water in Lac Bay–which is somewhat contained by the barrier reef and not constantly getting refreshed by ocean currents as occurs on the coastlines or at Klein Bonaire–she tested for the presence of chemical sunscreens. Surprisingly, she could determine the origin of the people using Lac Bay at the time of sampling, simply by identifying which chemical was prevalent in the water.

Chemical sunscreens manufactured in the EU often use octocrylene for the active ingredient. Chemical sunscreens manufactured in the United States generally tend to use oxybenzone as the most popular active ingredient. Since oxybenzone was also the one chemical originally cited as having potentially deleterious effects on the reef, this is the chemical upon which high focus was given during the research.

Oxybenzone, the good, the bad, and the ugly.

Actually, there is nothing good about oxybenzone.

Read the label on your sunscreen to see if it is chemical based.Oxybenzone acts as an endocrine disrupter.

Relative to reef environments, oxybenzone harms or kills coral larvae by inducing deformities.

Remember that with chemical sunscreens your skin absorbs all the ingredients as well–just imagine what the endocrine disrupters do to your body!

With many chemical sunscreens, the chemicals stay intact and are eliminated from your body via fluid waste after passing through major organs. That means, even if you are just sitting on the beach, the chemicals from your sunscreen are still added to the environment via wastewater.  Or, simply taking a shower at the end of the day washes additional contaminants into the ecosystem. Entering the ocean slathered with chemical sunscreens is causing real environmental damage.

Oxybenzone induces DNA damage and viral infections of corals.

Viruses live on coral reefs, just like they do in any terrestrial environment. The recent research has indicated that viral infections of corals are on the rise, and a correlation has been established between oxybenzone and increased infections.

Oxybenzone bio-accumulates in the tissues.

Oxybenzone may increase coral bleaching.

A 2008 study indicated that coral bleaching was exacerbated by viral infections (Danovero, Robert, et al.  “Sunscreens Cause Coral Bleaching by Promoting Viral Infections.” Environmental Health Perspectives 116.4 (2008) 441-447.)

A further study in 2016 indicated that the endocrine disrupters affected corals (as well as fish, mammals, algae, crustaceans, and humans) with

  • reduced neurological function
  • development disruption
  • cell/cancer proliferation
  • DNA damage
  • coral bleaching
  • oxidative stress in the presence of sunlight

(Downs, C.A., Kramarsky-Winter, E., Segal, R. et al.  Arch Environ Contam Toxicol (2016) 70. 265.)

How much is too much?

  • Effects on corals were reported at oxybenzone concentrations of 72 ng/Liter.
  • Bonaire’s water samples taken from Lac Bay contained an oxybenzone concentration of 1,54 ng/Liter.  (ng=nanogram)

What if my sunscreen doesn’t list oxybenzone?

It is possible that the ingredients in your sunscreen use different chemicals, or they might use a different name for oxybenzone.

Furthermore, just because your particular sunscreen uses another chemical to provide sun protection, it still can be causing harm. There simply is not enough data yet on all the various chemicals used by sunscreen manufacturers to be sure.

How can I check if my sunscreen is chemical-based?

If either titanium or zinc oxides are listed, the sunscreen is good to go!The best way is to read the active ingredients on the label. If you see titanium or zinc oxides as the active ingredients, you are good to go!

If you see anything else, it’s best to search for another alternative.

A very simple test (although not foolproof) is to read the instructions for use: If your sunscreen says to apply it 15 to 20 minutes before sun exposure, then chances are it is a chemical-based sunscreen, and it’s best to find a natural alternative utilizing zinc and titanium oxides as physical barriers.

What can I do for sun protection while visiting Bonaire?

There are a number of methods visitors can employ to reduce the effects of hazardous chemicals in the ocean, while still having proper sun protection.

Choose your sun protection wisely.

  • Never use sunscreens which list oxybenzone or benzophenone-3.
  • It’s probably best to avoid sunscreens which list the other chemicals mentioned above, as there is not enough known about the potential for damage to corals.

  • Do use sunscreen products using natural minerals as a physical barrier to UV rays (zinc or titanium) such as the sunscreen produced by the local Bonaire company, Tropical Nature. Their sunscreen product provides SPF 40, and UV protection of 98%. It’s non-toxic to the environment and rich with essential oils and natural emollients. The Tropical Nature sunscreen, along with their other health and wellness products, can be found at MultiShop at the Sand Dollar Shopping Mall in Hato as well as at the MG Store on Kaya Grandi in Kralendijk.

Be aware of false marketing claims and read the ingredients.

Many sunscreen manufacturers these days use marketing ploys to make you think their products are environmentally friendly. Use of the phrases “all natural” or “safe for the reef” might be true. And then again, they might not. Read the labels.

If engaging in any watersport, wear sun protective clothing.

If swimming, diving, or snorkeling, wear a full-body skin or wetsuit, such as the ones sold at Carib Inn. A thin, lycra hood will also avoid sunburn to the neck. Utilizing such items will drastically reduce the amount of sunscreen needed and you’ll enjoy excellent sun protection, without worrying about sunburns ruining your vacation.

If you’re lounging on the beach, remember it’s not healthy anymore to have that nice tanned look, so check out SPF clothing. If you are not yet familiar with SPF or UPF clothing, there is a great guide to finding the right sun protection clothing.

Wear hats to avoid using chemical sunscreen when in tropical reef environments.Wear a hat.

Wearing a hat significantly reduces the amount of sun that can reach your face. Floppy, broad-rimmed beach hats are always in vogue for the ladies, while what guy wouldn’t want to wear a tropic-weight version of a Crocodile Dundee hat, complete with optional neck protection?

Help Bonaire keep our reefs the healthiest in the Caribbean.

So, if you only take away a few thoughts from this information, let them be these:
  • Read the label of your sunscreen. If it lists any of the chemicals noted above or requires that you apply it prior to sun exposure, it is most likely chemical-based and is probably harming Bonaire’s reefs.
  • Buy natural sunscreen products. These use a physical barrier of zinc oxide or titanium oxide to provide complete, immediate protection (no need to apply 15 to 20 minutes prior to sun exposure).
  • Plan to wear sun protective clothing and hats, or wetsuits or skins, to reduce your skin’s sun exposure instead of using sunscreen.

(Source:  Bonaire Insider Reporter)


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Susan Davis, Bonaire InsiderSusan Davis has been living on Bonaire for over 25 years. She is a PADI Master Instructor, and an underwater and topside photographer. She also enjoys writing for The Bonaire Insider tourism news blog. 


 

 

 

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Restaurant Reviews on BonReviews:

5/5

Best Lunch Spot!  I am a tuna sandwich aficionado. I have sampled tuna sandwiches across Bonaire. Between Two Buns serves the best by far. I love their multi-grain bread with seeds and goodness. The salad itself is chock full of flavor. They put salty briny capers in their salad adding an extra flavor blast.  Wow, […]

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4/5

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5/5

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5/5

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4/5

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4/5

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5/5

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5/5

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4/5

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3/5

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5/5

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5/5

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5/5

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5/5

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5/5

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5/5

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5/5

Best food on Bonaire at Donna & Giorgio’s! We had 2 dinners and one lunch during our week in Bonaire. We loved the food, Donna, and her daughter. Everything we had was great! Be sure and call for a reservation.

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5/5

Hot Spot King Kong!   Bachelor Beach is er een stuk leuker en lekkerder op geworden. King Kong levert uitstekende kwaliteit. Verrassende smaken!

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5/5

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5/5

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5/5

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5/5

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4/5

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5/5

Eddy’s is Excellent!  We love going to Eddy’s. The service is always great and the food is fresh and outstanding!

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5/5

King Kong Burger Food Truck. Find it on Bachelors Beach. Tuesday through Sat…I think. We have returned to these freshly made, gourmet burgers several times. The meat is fresh and tasty. Prepared when ordered and seasoned to perfection. Several special recipes to choose from. Our favorite is the French connection….so unique and tasty, paired with mosquito […]

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5/5

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5/5

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5/5

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5/5

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5/5

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5/5

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5/5

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4/5

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5/5

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5/5

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4/5

My wife and I had a wonderful meal at Ingridients, but I have to say that the waiting staff did pressure us to select items we did not want.  Don’t hesitate to eat here because the food is excellent…just be prepared to say no to serving suggestions.

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4/5

Don’t miss Mezze while on Bonaire! We visited Mezze with friends and had a delicious meal. “Mezze” like “tapas” means “small plates” and all of the apps were outstanding: hummus, falafel, tabouleh, and baba ghanous, which we lapped up with homemade pita, forks and fingers. The concept of “small” evaporated when the entrees were served, especially […]

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3/5

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5/5

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5/5

Excellent daily specials and “to die for” ribs at Joe’s Grillhouse!  Excellent casual place. Jessica and Bart, along with the staff, make you feel welcome and comfortable. We always visit Joe’s at least twice during our yearly dive trip to Bonaire. The daily catch special is always excellent while the ribs are “fall off the bone” […]

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5/5

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5/5

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5/5

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5/5

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5/5

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4/5

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4/5

Latin Vibe at Cuba Compagnie!  I was invited to dinner by friends. Previously, I had been to Cuba for cocktails but dinner was a new experience. We sat outside surrounded by a lively and bustling vibe. The wait staff are very friendly and helpful. They are very busy so it takes patience and some effort […]

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5/5

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5/5

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5/5

At Sea serves works of art!  We dined at At Sea twice while we were recently in Bonaire. Both times we chose the Surprise Menu, and all of the dishes were beautifully prepared and delicious. The dishes were true works of art, decorated with beautiful garnishes and great imagination. Dessert one night was an underwater […]

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5/5

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5/5

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5/5

Great breakfast and lunch at Between Two Buns! Nice salads and sandwiches. Don’t forget to try the home made pies!

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4/5

Al fresco dining at Cuba Compagnie. We loved dining at Cuba. The outdoor setting is casual and comfortable. It’s a lively vibe. Service is efficient and friendly. I typically order the fresh fish. I have also enjoyed the ceviche.  Cuba is a fun spot for a group of friends.

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5/5

Best pizza at Pasa Bon Pizza! Best pizza on Bonaire.  We look forward to getting that crisp crust and hot cheesy pizza served at Pasa Bon pizza every time we go to Bonaire. Try their Lion Fish pizza….it is good !!

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5/5

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2/5

Pizza needs work at Blue Garden Brazilian Grill & Pizza Gourmet. The mojitos are great Service started off OK, then once I got my food, I never saw the server again, so never got any more water. The pizza needs work. The crust is about 2mm thick & is heavy & still not totally cooked. […]

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3/5

Cuba Compagnie Going Downhill We have been here a few times before. I went there tonight with my son and the service was unresponsive and when I said something I got a rude smart mouth response from management. The food is generally good. But don’t order the sodas. You get a small glass full of […]

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