~The Marine Conservation Society, Seychelles~  

 
   

 

 

 

Seychelles whale shark monitoring newsletter 

  April 2003  Vol 1, No. 1
   
 

DID YOU KNOW?

Although a female whale shark can carry over 300 embryos; she is able to control the rate at which they develope so that she only gives birth to one at a time....

 

NOTICE BOARD

MCSS Whale Shark monitoring workshop to be held at the National Institute of Education, Mont Fleuri, Mahe at 1.00pm on 28th May 2003
 

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Collision with a whale shark!

On the 16th February 2003, the high speed vessel La Creole limped back to Mahé for repairs after a collision with a Whale shark near Praslin. According to Travel Services Seychelles (TSS) who operate La Creole, the vessel was replacing Cat Cocos, the regular ferry service between Mahé and Praslin, which was undergoing routine maintenance.
The boat suffered slight damage (a hole approximately four inches in diameter in its fibreglass hull) and was temporarily taken out of service for repairs, suspending the regular boat service between Mahé and Praslin.

In an interview with Seychelles Nation, Mr Hugh Hoareau of TSS Marine Services said “we were travelling quite fast and were due to arrive on Praslin in 15 minutes when the coxswain noticed three whale sharks in our course. He swerved and successfully avoided them but apparently there was a fourth fish below the water surface”. Passengers on board, including Mr Hoareau, commented that it felt “as though we had beached”. None of the 20 passengers on board sustained any injuries.

The whale shark however, wasn’t so lucky. Mr Hoareau said that there was blood in the water behind the vessel and that the partly submerged 8m shark was seen swimming way. The blood appeared to be flowing from a wound on its back. The extent of injuries sustained by the whale shark is unclear. The 3 other sharks were unaffected by the incident and continued to swim at the surface.
This is the first ever reported collision incident between a vessel and a whale shark in Seychelles. However, Seychelles cannot claim fame for this isolated incidence as there are a number of reports dating back to 1932 of similar occurrence in the north western Indian Ocean region. In fact, according to E.W Grudger (1938), more whale sharks have been rammed by steamers in the Red Sea region than in any other part of the world.
A young whale shark showing fin damage (not through the collision reported in this article!)

 


Grudger believed that the frequency of such incidents were indicative of the sharks habits and behaviour. Being the largest fish, it has no enemies and seems to be unafraid of large vessels. In fact, whale sharks have been observed swimming so closely to vessels, that people have suggested they were inspecting them. They get caught on the bow either because they lie inert in the path of the approaching ship, or because they swim across the path so slowly that they are caught. The sharks that survive such encounters bear distinctive and often extensive scars.

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