The New Straits Times 19 Sep 11;
AT least 27 species of marine mammals, including dolphins, whales, porpoises and dugongs have been spotted in Malaysian waters over the years.
Marine biologist Dr Louisa Ponnampalam said the mammals were present all-year round, but because of a lack of awareness, not many people know this.
Sightings, she said, had been made in the waters surrounding Peninsular Malaysia such as the Straits of Malacca, Straits of Johor and South China Sea, as well as off Sabah and Sarawak in the Sulu and Sulawesi seas.
In fact, although the recent dolphin sightings in Kuala Sepetang have created a buzz, fishermen there say the marine mammals have been around for at least 30 years.
Speaking to the New Straits Times, Louisa said the Matang Mangrove Forest Reserve, where the dolphins were usually spotted, was well kept, and therefore, provided a suitable habitat for such creatures.
"Since dolphins will follow wherever their prey go, such as fish and squid, there must be an abundance of food there," said the post-doctoral research fellow at the Institute of Ocean and Earth Sciences at Universiti Malaya.
The NST recently accompanied Louisa and fellow marine biologist Fairul Izmal Jamal Hisne to Perak to observe the dolphins.
Despite the heavy rain that day, they managed to catch a glimpse of the dolphins and confirmed that they were Indo-Pacific humpbacks.
The two recorded preliminary data such as water depth, water salinity, number of dolphins sighted, the dolphins' behaviour and human activity in the area.
Up to five dolphins were seen, most of which appeared to be young adults. One calf was spotted among the pod.
Louisa said more studies should be done on the dolphins in Matang as they lived in a pristine environment and much could be learned from observing them.
When asked about the dolphins' potential for promoting ecotourism in Malaysia, Louisa said it was important for sufficient research to be done first, as little was known about them.
"If we wish to promote dolphin-watching as a tourist attraction, we need to make sure that we know enough about the animal, because such activities could be detrimental to them, especially if ecotourism initiatives are not properly managed or regulated, as it could lead to the dolphins migrating elsewhere."
She also said it would be best to use small boats that were easier to manoeuvre, as well as those with quieter engines so as not to aggravate the dolphins and other marine animals.
Louisa added that people should be careful when dealing with these creatures.
"There is the common perception that dolphins are really friendly animals, but in reality, they are among the top predators in the marine food chain.
"Dolphins can be curious and playful creatures, but people need to remember that these are wild animals and should be handled with caution."
Louisa is also part of Langkawi Dolphin Research, an initiative that works with the Fisheries Department and Marine Parks Department to study dolphins and collect more information about them for conservation efforts.
She said it was important to keep tabs on marine animals because they could be used as health indicators of our oceans.
"The absence of marine animals such as dolphins, whales and turtles in an area should ring alarm bells, as it is an indicator that the area can no longer sustain them, which means that humans are in trouble as well."
Louisa said she hoped in the future, conservation efforts in Malaysia would focus not only on the protection of wildlife, but also their natural habitats as well, as the animals' survival would be reliant on the condition of their environment.
There are generally three threats to dolphins' survival -- the degradation or loss of their natural habitat, depletion of food and entanglement in fishing gear -- all of which occur as a result of human activity.
Dolphin species commonly found in Malaysia are Indo-Pacific humpback, Indo-Pacific bottlenose, Irrawaddy, Long-beaked common and Spinner dolphins.
