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Corals are the most visible form of marine
life in Hawaiian waters. They are closely  related
to sea anemones and jellyfish as they contain stinging cells or nematocysts.
These nematocysts can cause skin irritation in humans. Coral is also very
sharp, able to inflict cuts and abrasions. Although the cut may seem clean
and superficial, infection may occur from tiny pieces of coral and the
bacteria associated with them. This may produce swelling, and tenderness.
In extreme cases the infection spreads causing blood poisoning. Allergic
reactions can also be very serious and time delayed. Treatment for such
injuries includes washing the cut immediately with soap and fresh water.
Flush the area with hydrogen peroxide, and apply an antibiotic ointment.
If the problem persists, see a physician. The best way to prevent being
injured from coral is to avoid touching or kicking live corals.
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© 2003-2004 Hanauma Bay Education Program,
University of Hawaii Sea Grant Extension Service
100 Hanauma Bay Road ~ Honolulu, HI 96825 ~ Ph: (808) 397-5840 ~ E-mail:
hanauma@hawaii.edu
Last updated
March 17, 2008
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