Green Tips (Jun 2020) - Corals - Flowers of the Seas

My Green Pledge: Appreciate Nature

Did you know?

  • Corals are animals, not plants.

Corals are sessile animals, belonging to Phylum Cnidaria that also includes an enormous range of jellyfish, hydroids, soft corals, anemones, and many others.

  • Corals don’t die from aging.

Coral colonies can grow continuously and do not die from aging. Their death is entirely caused by environmental and anthropogenic pressures.

  • Certain corals grow less than 1 cm a year only.

The growth rate of massive corals is slow, usually less than 1 cm a year. A massive Porites colony of 1 meter high is over 100 years old.


Why should we protect corals?

  • They are important spawning and nursery grounds for fishery resources.

  • Corals and many coral-associated organisms contain natural products of high pharmaceutical value.

  • They protect coastlines and stabilize substrata from wave action and storms.

  • Corals are our priceless recreation venues.


Code for visiting coral areas:

  • Do not stand, sit, or touch corals. Such contact exposes live coral tissues to disease and can cause extreme damage to coral colonies.

  • Do not collect any corals. It will help to preserve the biodiversity of the coral community and ensure good underwater scenery.


Read more:



  • Agriculture, Fisheries and Conservation Department. Conserve Hong Kong Corals. 2014. Available:
  • Lun, C.Y. Hong Kong Reef-building Corals. 2003. Friends of the Country Parks and Cosmos Book Ltd.