The Sea life is bountiful with its diversity of c o l o u r f u l coral cities and blooming seasons of the seas.
Underwater Coral Cities ;
Sea life exhibits an immense diversity of c o l o u r f u l shapes in the coral reefs. Such dazzling phenomenon of varied c o l o u r s can hardly be seen anywhere on the earth.
Coral reefs form the underwater cities of the seas, crowded bustling ones with creature communities belonging to animal kingdom.The coral reef world grows in the myriads of dazzling colours ,creeping, burrowing worms ,flower like sea anemones crustaceans . Some animals exhibit their brilliant colourations to attract a mate ,others being camouflaged to scare away the potential predators.
The reef builds large cup coral polyps with food gathering tentacles.
Slowly year by year ,a coral reef grows as million of tiny animals ,the limestone skeletons in millions of polyps accumulate to form the mighty coral reefs in the sea water.
The reef itself is craftsmanship of the living things.
The corals change minerals dissolve into limestone.
The Clams tubeworms give hard part to the skeletons of the reef. The Algae repair the rough edges of the reef by cementing powdered remains of one celled organisms to fill the tiniest openings.
Formed over thousands of years ,say centuries together ,the coral reefs expand around a couple of inches every year and thus extend to the miles together. The largest reef ; Great Barrier Reef , is nearly 1300miles along the north-eastern coast of Australia.
It could supply limestone to build eight million replicas of Egypt’s largest Pyramid.
The coral reef is dynamic process of creation not a static structure of a man.
It is never ending process ,some animals building it some tearing it ,resulting in crevices, tunnels burrows and ledges.
Reef Building Corals abound and grow in warm clear shallow waters.
There are three types of Coral growths ;
1Fringing reefs extending directly from the shore
2.Barrier reefs run parallel to the shore but separated by deep waters
3.Atolls , which are circular ones enclosing the quiet lagoons.
SEA FAN Thousands of tiny polyps fringe sea fan’s branches during night and contract during day into skelton
A small Atoll is having zones above and below water surface with plants and animals.
Each Atoll and Reef are different from others.
Atoll reef on the lagoon side ,the shore slopes down to the base of the water . The lagoon waterline falls and rises with the tides .The snails escape the heat of the shore and bury themselves deep into the coral rubble.
On the sloping side of lagoon reefs corals grow abundantly and many beautiful shaped corals grow , some slender tapering ones ,getting interwined, and many others heavy and massive.
Growing Coral Colonies.
A coral colony usually consist of thousand polyps , arising from single individual. The fertilized eggs of
Of reef building corals grow into free swimming larvae , the larges sized about 1/25 inch long.
A larvae settles down on a surface with mouth upwards ,it secretes a limestone cup around itself and spends rest of life in this external skeleton.
Surrounding the mouth are delicate food gathering tentacles that collect plankton from the water.
As time speds away each new polyp buds in turn and thus grows closely knit coral community in beautiful colours ,brown ,lavender, yellow greens etc.
A reef colony is huge complex of many colonies and kinds of corals mostly growing on limestone laid down for generations. The Great Reef Barrier contains more than 350 species and millions of active colonies.
The reef colonies of this earth exist within radius of 3,600 mile wide band ,about 30 degrees north and south of Equator, roughly from the northern latitude of Florida to that of southern Brazil.
A giant single polyp housed in a stony skelton up to up to 7 inches long , called mushroom coral , is oldest and most beautiful of corals.
Coral Reefs in colourful display.
Seas, a source of magnificient discoveries , fascinating ,luring mankind to its fathoms for more and more revelations unknown and unheard ,much to the amazement of human minds.