In
contrast to what their terrifying name seems to imply, whale sharks
(Rhincodon typus) are not really dangerous creatures. Tourists even
find them gentle and playful. They measure between 18 to 35 feet in
length and weigh about 20 tons. They are easily recognized for their
broad head and a random of white dots and lines along their backs.
Incapable
of biting and chewing, they suck in water with prey, which are filtered
through their gills. Through their large mouth, lined with thousands
of tiny teeth, they feed on plankton, shrimp, anchovy, krill, small
crabs, and other small fish. In 1996, a marine biologist discovered
that whale sharks are ovoviviparous, which means that the female produces
live offspring from eggs hatched in the uterus.
There
has been no report of whale sharks taking humans as prey. Rather,
it is the fishermen who have been hunting and plundering the stock
of whale sharks in the Philippines. Harpoon fishermen hunt these giants
to supply the high demand for the meat and medicinal by-products in
Asia.
Considered
as a delicacy and an aphrodisiac, whale sharks are being bought by
Taiwanese fishing firms and Hong Kong restaurant owners. There were
reports that a fully grown (more than 30 years old) whale shark is
worth as much as P400,000. The meat sells for HK$500 or P1,700 per
kilo.
This
led to the steady decline in the population of whale sharks in the
country. More than a hundred whale sharks were reportedly killed in
Donsol alone prior to the documentation in 1998. The situation is
worse in other provinces. The gentle giants were hunted to near extinction
off the central island of Bohol.
Alarmed
by the problem, the Philippine government declared the whale shark
as an endangered species in 1998, thereby banning its plunder and
exploitation. Right now, the Department of Tourism is promoting eco-tourism
to protect the whale sharks in Donsol. Present conservation measures
allow tourist to interact with the whale sharks, with the help of
trained tour guides.
The
whale shark interaction tours include swimming within four meters
of the sea giants, under the watchful eyes of the guides. So far,
it is the best the government can do to protect the whale sharks.
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