Friday, 03 September 2010
You are here: Home Amazing & Intresting Whale Shark
Whale Shark PDF Print E-mail
Monday, 30 November 2009 00:00

The whale shark, Rhincodon typus, is a slow moving filter feeding shark that is the largest living fish species. It can grow up to 12.2 m. (40 ft.) in length and can weigh up to 13.6 tonnes (15 short tons). . The shark is found in tropical and warm oceans and lives in the open sea and can live for about 70 years. The species is believed to have originated about 60 million years.

Whale Shark

Whale Shark

This distinctively-marked shark is the only member of its genus Rhincodon and its family, Rhincodontidae (called Rhinodontes before 1984), which is grouped into the subclass Elasmobranchii in the class Chondrichthyes.

Whale Shark

Whale Shark

Whale Shark

The species was first identified in April 1828 following the harpooning of a 4.6-metre (15.1 ft) specimen in Table Bay, South Africa. It was described the following year by Andrew Smith, a military doctor associated with British troops stationed in Cape Town. He proceeded to publish a more detailed description of the species in 1849. The name "whale shark" comes from the fish's physiology; that is, a shark as large as a whale that shares a similar filter feeder eating mode. Known as a deity in a Vietnamese religion, the whale shark is called "Ca Ong", which literally translates as "Sir Fish".

Whale Shark

Whale Shark

Whale Shark

In Mexico, and throughout much of Latin America, the whale shark is known as "pez dama" or "domino" for its patterns of spots. Whales sharks go by the name of "Sapodilla Tom" in Belize due to the regularity of sightings near the Sapodilla Cayes on the Belize Barrier Reef. In Africa, the names for the whale shark are very evocative: "Papa Shillingi" in Kenya came about as it is believed that God threw shillings upon the shark which are now its spots, and in Madagascar whale sharks are known locally as "Marokintana" which means "Many stars". In Indonesia, Javanese also called this species referring to star as "geger lintang" which has meaning "stars in the back".

Whale Shark

Whale Shark

Whale Shark

The whale shark is a filter feeder — one of only three known filter feeding shark species (along with the basking shark and the megamouth shark). It feeds on phytoplankton, macro-algae, plankton, krill and small nektonic life, such as small squid or vertebrates. The many rows of teeth play no role in feeding; in fact, they are reduced in size in the whale shark. Instead, the shark sucks in a mouthful of water, closes its mouth and expels the water through its gills.

Whale Shark

Whale Shark

Whale Shark

During the slight delay between closing the mouth and opening the gill flaps, plankton is trapped against the dermal denticles which line its gill plates and pharynx. This fine sieve-like apparatus, which is a unique modification of the gill rakers, prevents the passage of anything but fluid out through the gills (anything above 2 to 3 mm in diameter is trapped). Any material caught in the filter between the gill bars is swallowed. Whale sharks have been observed "coughing" and it is presumed that this is a method of clearing a build up of food particles in the gill rakers.

Whale Shark

Whale Shark

Whale sharks congregate at reefs off the Belizean Caribbean coast, supplementing their ordinary diet by feeding on the spawn of giant cubera snappers, which spawn in these waters between the full and new moons of March through September.

Whale Shark

Whale Shark

Whale Shark


Bookmark and Share
QUOTE THIS PAGE ON YOUR BLOG/SITE

CREATELINKTOWARDSTHISARTICLE



PREVIEWQUOTE

Whale Shark
The whale shark, Rhincodon typus, is a slow moving filter feeding shark that is the largest living fish...

 

More Articles...

Big boobs tattoo

News image

There’s nothing wrong with liking big-boobed women, but trying to insert a foreign object inside your leg just to make a tattoo look real.......

READMORE

Mosque in Brunei

News image

Sultan Omar Ali Saifuddin Mosque....

READMORE

How many dead bodies are up on

News image

Mount Everest is both the highest mountain and the highest graveyard in the world. As of 2002, 175 climbers had died on the mountain, and the vast majority of these bodies were left ...

READMORE

World’s largest poker table

News image

Built in 2007 for the promotion of a movie called Wise Guys On Texas Hold’Em, this giant poker table is 30 feet long and 12 feet wide making it the largest poker table ever.......

READMORE

World's LONGEST officially Pla

News image

Llanfairpwllgwyngyll (long form Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch), also spelt Llanfair Pwllgwyngyll and commonly known as Llanfair PG or Llanfairpwll, is a village and community on the......

READMORE

Two Headed Cow

News image

A Chinese farmer found his cow in pain and having complications giving birth. Finally the baby cow was born and the farmer was shocked to see.......

READMORE
-
+
6