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Turtle Islands Park, Sabah
Turtle Islands Park, Sabah
Turtle
Islands Park
Sea turtles are one of nature's great marvels.
This
park lies 40 km off Sabah's East coast. The nearest town is Sandakan.
It consists of the following islands:
Pulau Bakkungan Kecil
This is the largest island.
Attractions: Green turtles
Pulau
Selingan
The second largest island of the park provides also accommodation and a
restaurant.
Attractions: Green turtles.
Pulau Gulisan
Attraction: Hawksbill turtles and green turtles.
Best time to visit: between July and October.
Getting there: by boat from Sandakan, the boat ride may take in between one hour
and three hours.
Turtle scientists like Dr. Jean Mortimer of the USA, say they remain
intrigued by the reptile's precise navigational feats. Female Green Turtles, for
instance, are known to venture hundreds, even thousands of nautical miles across
seas and oceans but will always find their way back to the very same beach where
they first hatched, to lay eggs, 20 or more years later, when they mature.
Marine turtles live between 40 to 70 years. Mortimer says scientist are
mystified exactly how the creatures remember their ways through trackless seas.
The British North Borneo Chartered Company
rulers first imposed restricted hunting of the Hawksbill Turtle (for their
shells) way back in 1927. The Malaysian government started the country's sea
turtle hatchery in Selingan Island in 1966 and in 1977, gazetted 1,740 hectares
islands and sea embracing Selingan, Bakkungan Kecil and Gulisan into a marine
park which is only 40 km North of Sandakan. A powerful speed boat can reach it
in less than an hour.
Generally speaking, turtle populations
worldwide are dwindling. But in Sabah's protected turtle islands, nestings have
recorded a steadily increasing trend since 1991, according to Dr. Junaidi Payne,
a scientific Officer with Worldwide Fund for Nature, Malaysia, a sign that 30
years of conservation efforts are working. Only
two species of turtles, namely the hawksbill and the bigger Green Turtle, nest
at the turtle islands. Sighting is guaranteed, every night, year round and they
are especially plentiful during the peak months between July and October. Fewer
land during the North East Monsoon months between December and February.
The highlight is to watch a turtle laying eggs.
The process is dramatic, especially with the large Green Turtles as they lumber
ashore, select a site, dig a 12 to 18 inch deep egg chamber with their powerful
hind flippers and deposit between 40 to 190 eggs, covering them with sand before
returning to sea.
NESTING BEHAVIOURS
The complex and tedious process of the turtle
egg-laying can be divided into eight stages:-
1. Emerging from the sea, selecting a course to a beach.
2. Selecting a nesting site above the high-tide mark.
3. Clearing the site with sweeping motions of the front and sometimes hind
flippers to encave herself in the body pit.
4. Excavating the eggs chamber with her rear flippers to a depth of about 12 to
18 inches.
5. After the completion of the eggs pit, there is a short rest, then she
proceeds to lay her eggs.
6. When all the eggs have been laid, the process of covering and concealing the
nest pit, the turtle returns to the sea. The whole process normally takes about
an hour to complete.
HATCHERIES
A hatchery has been established on each of the three islands. The wire
enclosures are normally situated 50 feet away from the high water mark. Clutches
of eggs are transplanted inside the enclosures and the distance between each
hole is three feet.
Clutches of freshly laid eggs are excavated and
transplanted to the hatchery with a minimum of delay. In the hatchery the eggs
are carefully placed by hand into a pit of 30 inches deep. Before the pit is
fully covered with sand, a chicken wire mess cylinder is placed round its mouth
and a bamboo plate with the following information is placed inside:- (i) serial
number of nest, (ii) date of collection, and (iii) number of eggs transplanted.
INCUBATION PERIOD
After
between 50 - 60 days, the young hatchlings emerge to the surface of the pit,
usually at night when the temperature is cooler and the sand not so hot. Apart
from the hazards of overheating and dehydration, emergence at night would also
allow the hatchlings to avoid making a journey across the exposed beach where
they would be highly visible to the predators.
(Sabah Tourism Promotion Corporation)
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