reefs – fakuto

Dying coral reefs have been a problem for years now, and scientists have struggled to figure out ways to revive struggling reef ecosystems. But a recent study published in the journal Nature Communications has given scientists (and everyone, really) newfound hope about this critically important issue.

The study found that playing sounds on underwater speakers could entice fish to come to dying reefs. The sounds being played on these speakers aren’t pop music, to be clear. Rather, they mimic the sounds of a healthy reef. Researchers found that when a loudspeaker played the sounds of a healthy reef, double the number of fish came by, and 50% more fish species visited compared to dead coral reef areas without any artificial sounds.

Broadcasting healthy coral reef sounds enticed doubled the total number of fish to a dying reef and increased the number of fish species by 50%. https://t.co/80i5fXFOUA

— Peggy Liu (@shanghaipeggy) December 2, 2019

The experiment lasted 40 days, and the species of fish that flocked to the coral with the loudspeakers were very diverse. This is valuable because fish clean reefs of choking algae and help make space for new coral to grow. While this certainly isn’t the only ingredient in reviving dying coral reefs, it definitely can help reefs begin to recover. And diverse fish species bring different functions to coral reefs, which further helps recovery.

Andy Radford, a co-author of the study, said, “If combined with habitat restoration and other conservation measures, rebuilding fish communities in this manner might accelerate ecosystem recovery.”

There are many factors that cause a cause reef to suffer or die. In the Florida Keys, sewage and fertilizer runoff has led to nitrogen enrichment in areas with coral reefs, killing corals. Rising ocean temperatures kill coral as well – around 50% of Australia’s famous Great Barrier Reef has been bleached to death because of high oceanic temperature caused by climate change. Though, on a positive note, it looks like some corals are becoming more resistant to increasing temperatures in the water.

Let’s hope that research and ACTION continues to develop for this very important cause. We only have one Earth, let’s take care of it!

The post Research Shows That Underwater Speakers Can Help Revive Dying Coral Reefs appeared first on UberFacts.

There are a lot of sunscreens that are claiming to be “reef friendly” these days.

Photo Credit: Public Domain Pictures

A new label on sunscreens allows consumers to see at a glance how safe the product is for ocean life. If you see the words “reef friendly” printed next to an image of a coral, then the sunscreen should be lacking damaging chemicals. Should be…

A couple of years ago, a report about the effects of sunblock use in the oceans was published by the Environmental Contamination Toxicology journal. According to the study, the common sunscreen ingredients octinoxate and oxybenzone are capable of contributing to bleaching in coral reefs.

Since then, Palau, Hawaii and Key West, Florida, have banned consumer use of these sunblock ingredients. Other tropical locations popular with vacationers, like Mexico, advise visitors about the potential of damage.

Photo Credit: Pixabay

Out of concern for the reefs, many companies like ThinkSport and All Good Sport offer coral friendly formulas. Other brands, such as Coppertone (for their Water Babies line) and Alba Botanical use minerals as a blocker. Thankfully, these sunscreen alternatives are easy to find.

Everyone should want to keep coral reefs from bleaching because the phenomenon is devastating to ocean health. But before you throw out all your drugstore sunscreen and suntan lotions, something to note: some environmentalists and scientists have come out against the report.

This is because Coral reef damage is caused more by environmental factors, such as climate change and pollution, than beach-goers slathered in sunscreen. Even if octinoxate and oxybenzone were successfully eliminated from the ocean, the damage would continue.

Photo Credit: Flickr

Also, the reef-friendly labeling itself is an issue. As is typical with other kinds of labeling—for example, food sold as all-natural or whole grain—there are no set standards. Consumers may be misled to believe they are using a reef safe sunblock because any manufacturer can make the claim. Consumer Reports also consistently finds mineral based sunscreens as not matching their SPF claims.

But because tropical beaches and diving spots do test for elevated levels of sunscreen, it wouldn’t hurt to use products without octinoxate and oxybenzone. Even if there are larger issues than sunscreen in the decline of the world’s coral reefs, every little stressor adds to the cumulative effect. So using reef-safe sunblock may not solve the issue, but it prevents you from being a direct contributor. Plus, they’re not even that expensive.

From an environmental standpoint, small changes sometimes result in big wins.

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