How destructive is snorkeling or diving at a coral reef?

Yes we should worry!

The world's coral reefs are not in such great shape: According to a comprehensive 2008 report from the Global Coral Reef Monitoring Network, approximately 19 percent of the world's coral reefs are "effectively lost"—meaning that they're so degraded or polluted they can no longer support healthy ecosystems or provide other benefits—and another 15 percent are in serious danger of joining that category within the next 10 to 20 years. Reefs are more than just awe-inspiring and gorgeous; they're also brimming with wildlife. They provide local communities with food and money—both from fishing and from tourism—and help protect coastlines from storms and rough waves.

Ocean frolickers can damage corals intentionally—by touching them or breaking off branches as souvenirs—and unintentionally, by standing, walking, or dragging their gear over them. Snorkelers and divers can also kick up clouds of sediment with their fins. When that grit lands on a reef, it blocks the sunlight that is needed for photosynthesis. Vacationing snorkelers and scuba divers (tourism) is a major area of concern. The damaging effects may be even more pronounced in developing countries such as ours, where rapid expansion of the tourism industry isn't always coupled with well-managed conservation efforts. As is the case in Sabah..unfortunately :(

Do not step on fragile corals!!

When wading in shallow waters, make sure you're walking over sand or gravel, particularly if you're dragging a surfboard. Another way to protect the reefs is to practice swimming before you go—so you're nimble enough in the water to avoid touching the corals. (Klutzy landlubbers like the Lantern should wear a snorkel vest and make sure to get some training before heading in.) Photographers need to be extra cautious: Your extra gear and desire to get sweet close-up shots make you a special hazard.

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