Marine mammals in the waters of east coast Johor, Malaysia

Research output: Contribution to journalArticle

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Abstract

Marine mammal searches were opportunistically conducted during the East Coast Johor Scientific Expedition (ECJSE) on 21-30 May 2012, on a live-on-board (LOB) diving vessel, MV BLACK PEARL. The expedition was designed mainly to survey coral reef ecosystems and water quality. Daylight visual observations of the sea were undertaken during sailing and stopping/anchored from the most upper open-deck of the vessel. The survey resulted in two sightings of long-beaked common dolphins (Delphinus capensis), each at Pulau Aur and Pulau Tinggi. Both observations were brief (< 5 minutes) and were made when the vessel was anchored. Based on anecdotal evidences, skeletal remains and previous surveys, the vulnerable dugong, Indo-Pacific bottlenose, Indo-Pacific humpback, Irrawaddy and long-beaked common dolphins, the false killer and pygmy killer whales, and the baleen whales are known to occur in the East Coast Johor waters, at least occasionally. The low sighting rate with marine mammals during this survey is highly likely caused by the survey design and also may be due to the environmental conditions and ecological factors. Dedicated and periodical boat and aerial surveys for marine mammals need to be conducted to determine species diversity and to understand the seasonality, habitat use, and social interactions of the marine mammal populations in the area. The findings will be most useful for marine park and fisheries authorities to plan conservation management strategies for marine mammals and promote their conservation through eco-tourism activities.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalASM Science Journal
Volume8
Issue number2
Publication statusPublished - 2014

Fingerprint

marine mammal
coast
vessel
dolphin
whale
water
skeletal remains
survey design
aerial survey
marine park
condition factor
ecotourism
conservation management
diving
habitat use
coral reef
seasonality
species diversity
environmental conditions
water quality

Keywords

  • Cetacean
  • Distribution
  • Diversity
  • Dugong
  • Johor
  • Marine park
  • South China Sea

ASJC Scopus subject areas

  • General

Cite this

Marine mammals in the waters of east coast Johor, Malaysia. / Jaaman, S. A.; Mohamed, Che Abd. Rahim.

In: ASM Science Journal, Vol. 8, No. 2, 2014, p. 143-149.

Research output: Contribution to journalArticle

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