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Polyp Power


                                                             One  might  assume  that  such  magnificent
                                                             buildings were shaped by an underwater
                                                             volcanic eruption, or perhaps moulded by the
                                                             crashing tides of the ocean. But corals aren't a
                                                             type of geological formation; they're actually

                                                             living organisms! The motley structures that
                                                             form our reefs are the grand exoskeletons
                                                             built by minuscule, anemone-like creatures
 Cities of                                                   known as coral polyps. These polyps are

                                                             colonial, which means that they aggregate
                                                             and live together in a tight-knit community.
                                                             They each excrete a hard calcium carbonate
                                                             shell at their base for protection, which, over
 The Sea                                                     apartment-like superstructure characteristic
                                                             thousands of years, eventually forms the


                                                             of corals.


                                                             Curiously, all polyps in a colony are
                                                             genetically identical, experiencing genetic
                                                             variation only during spawning season.
                                                             During this period, colonies expel gametes
                                                             that combine to form free-swimming larvae
                                                             known as planulae that are free to explore
 Sea Life Sanctuary   From striped shrimp cleaning           the world, searching for a suitable location
 Written by Lee Jun Koi Sr1ScC      the crevices to majestic turtles   to start their sessile adult lifestyle.
 Congratulations! You've discovered the   gliding above them, all sorts of
 submerged city of Atlantis! Well, the   creatures inhabit these reefs.   Polyps  hunt  by  protracting  their  tentacles
 You've probably spent many days playing  fishy form of it anyway. These colourful   The corals' skeletal framework   outward, capturing microscopic plankton
 at your local beach. Maybe near your  corals look straight out of an architect's   offers a safe haven for small fish   such as copepods, krill, and fish larvae.
 hometown or at a nearby getaway from  sketchbook. With designs ranging from   and mollusks, providing shelter   To supplement this, they come equipped
 the hustle and bustle of the city. Malaysia  precariously stacked tables to giant bulbous   from predators. The abundance   with stinging cells known as nematocysts,

 is known for its pristine coastlines after all!  brains, they form the undersea cityscape   of algae also serves as a bountiful   which explode on contact to deliver a
 But if you were to venture further asea, the  known as the coral reefs.   source of nutrients for many of   venom-infused needle into the unfortunate
 plain patches of sand would give way to vast   the reef's inhabitants. Imagine it   recipient, immobilising the prey as they're
 outcrops of living rock, their kaleidoscopic  Found near clear coastal waters, the reefs   as a rent-free apartment complex   dragged into the maw of the tiny yet deadly
 hues  gently  glimmering  underwater.  thrive as a vital ecosystem that a myriad of   where you could feast like a king   polyp.
 Teeming with life, schools of fish weave  creatures call home. In fact, coral reefs house   every day, and you could see why
 through the stony structures that are home  a staggering 25% of all marine life , their   this  combination  of  safety  and
 [1]
 to the architects of the sea—the corals.   inhabitants as vibrant as their surroundings.   sustenance thrives with life.

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