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Revhaj
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Hajerne
i Thailand Tyrehaj.
(Carcharhinus leucas)
Denne haj, som findes i alle have, ses meget sjældent af dykkere i Thailand, da den foretrækker dybt vand. Den har ry for at være en pågående og, nogle steder i verden, meget farlig haj. Tyrehajen er i stand til at leve i ferskvand, og den en kendt for at have vandret mange hundreder kilometer op i store floder. De store hajer i den sydamerikanske Nicaragua Sø menes at være Tyrehajer. Størrelse: max 3,2 m.
Se også: http://www.mba.ac.uk/jmba/pdf/6413.pdf I løbet af 2008 forsvandt alle tyrehajerne fra Chumphorn Pinnackle ved Koh Tao grundet hajfiskeri efter finner, og tyrehajerne ved Hin Daeng er der ingen der har set i meget lang tid. Det forlyder dog, at der siden november 2009 atter næsten dagligt er set flere store tyrehajer ved Chumporn Pinnackle. Så der er måske håb: Mads Frese. Januar
2010: Lidt mere nyt fra Koh Tao. Vi ser stadig tyrehajer hver dag på Chumphon
Pinnackle, både voksne og unger, så det er super at se flere generationer,
godt tegn. Hajerne forsvandt dog igen, men så i 2012 skete der noget: "It has been a long time since we have had Bull Sharks around Koh Tao. We use to be able to guarantee shark sightings at Chumphon Pinnacle during certain times of the year. Sometimes we were able to see up to 10 sharks at a time. In 2010, one of the hottest years on record ever, Koh Tao suffered a bleaching event where lots of coral were damaged and the sharks (usually at Chumphon Pinnacle) disappeared. Luckily for us, the coral has now recovered, but the sharks left and didn’t return…until now!!! For the past few weeks, we have been fortunate enough to dive with Bull Sharks at Sail Rock. These amazing creatures are the highlight of any dive. They should not be feared as you have more chance of a vending machine causing you injury than a shark. BUT they should be respected!!! Without sharks, the marine ecosystem would no longer function, meaning huge problems for the planet as a whole. We run a Sail Rock trip every Sunday to give our divers the chance to see the sharks (and the best dive site in the Gulf of Thailand)." Desværre blev de der ikke som du kan se her: "They started to appear at this dive site (Sail Rock) back in July last year, then they suddenly disappeared in November. No longer there, and no one has seen one since, that i am aware of. Not good news at all."
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