Recent sightings of marine mammals in Andaman Islands, India

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Bitopan Malakar
S. Venu
Chandrakanta Ojha
B. Santhosh Ram
Nitul Kumar Gogoi
Raj Kiran Lakra
Ganesh Basumatary
Liju Thomas
Rahul Nagesh


This study reports opportunistic sightings of marine mammals between August 2013 and January 2014 in the Andaman region.  Seven sightings were recorded during this period out of which one was of a Dugong, which is significant considering its small population size in India and limited data on its distribution and abundance.  The rest were 24 dolphins (Tursiops sp.).  Four sightings were of the same pod of dolphins on different days at the same location.  Two sightings occurred during regular coral reef monitoring survey and the other five during fishery resource survey by trawling operations.  These sightings are of great significance as there is a lack of studies on marine mammals from the region.  Sighting records are useful for understanding aggregation site, behaviour, habits and habitat and residency patterns and provide important information for conservation of marine mammals.


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Abhilash, K.S., B. Anoop, K.S.S.M. Yousuf, R. Jeyabaskaran & E. Vivekanandan (2011). Occurrence of Killer Whale Orcinus orca in Andaman waters. In: Dr. S Jones Centenary Colloquium on ‘Challenges in Marine Mammal Conservation & Research in the Indian Ocean’, 26–27 August 2011, Kochi.

Ballance, L.T. (1990). Residence patterns, group organization, and surfacing associations of bottlenose dolphins in Kino Bay, Gulf of California, Mexico, pp. 267–283. In: Leatherwood, S. & R.R. Reeves (eds.). The Bottlenose Dolphin. San Diego. Academic Press.

Carwardine, M. (1995). Whales, Dolphins and Porpoises. Dorling Kindersley Limited, London, 256pp.

Chabanne, D., H. Finn, C. Salgado-Kent & L. Bejder (2012). Identification of a resident community of Bottlenose Dolphins (Tursiops aduncus) in the Swan Canning Riverpark, Western Australia, using behavioural information. Pacific Conservation Biology 18: 247–262.

D’souza, E. & V. Patankar (2009). First underwater sighting and preliminary behavioural observations of Dugongs (Dugong dugon) in the wild from Indian waters, Andaman Islands. Journal of Threatened Taxa 1(1): 49–53;

D’souza, E. & V. Patankar (2011). Ecological studies on the Dugong dugon of The Andaman and Nicobar Islands: A Step Towards Species Conservation. Nature Conservation Foundation, Mysore, 19pp.

D’Souza, E., V. Patankar, R. Arthur, T. Alcoverro & N. Kelkar (2013). Long-term occupancy trends in a data-poor Dugong population in the Andaman and Nicobar Archipelago. PLoS ONE 8(10): e76181;

Hale, P.T., A.S. Barreto & G.J.B. Ross (2000). Comparative morphology and distribution of the aduncus and truncates forms of Bottlenose Dolphin Tursiops in the Indian and Western Pacific Oceans. Aquatic Mammals 26: 101–110.

Jayasankar, P., B. Anoop, E. Vivekanandan, M. Rajagopalan, K.M.M. Yousuf, P. Reynold, P.K. Krishnakumar, P.L. Kumaran, V.V. Afsal & A.A. Krishnan (2008). Molecular Identification of delphinids and finless porpoises (Cetacea) from Arabian Sea and Bay of Bengal. Zootaxa 1853: 57–67.

Jefferson, T.A., P.I. Stacey & R.W. Baird (2008). Marine Mammals of the World: A Comprehensive Guide to their Identification. Academic Press, 592pp.

Lott, R. (2004). Group size, social associations and resident patterns of Bottlenose Dolphins (Tursiops truncatus) in Cardigan Bay, Wales. Master of Science thesis, School of Biological Sciences, University of Wales, Bangor, 97pp.

Lusseau, D., B. Wilson, P. Hammond, K. Grellier, J.W. Durban & K.M. Parsons (2005). Quantifying the influence of sociality on population structure in Bottlenose Dolphins. Journal of Animal Ecology 1: 1–11.

Pandey, C.N., K.S. Tatu & Y.A. Anand (2010). Status of Dugong (Dugong dugon) in India. GEER Foundation, Gandhinagar, 146pp.

Raghunathan, C., S.S. Kumar, S.D. Kannan, T. Mondal, C.R.

Sreeraj, R. Raghuraman & K. Venkataraman (2013). Mass stranding of Pilot Whale Globicephala macrorhynchus Gray, 1846 in North Andaman coast. Current Science 104(1): 37–41.

Sivakumar, K. (2013). Status of Dugong dugon in India: strategies for species recovery, pp. 419–432. In: Venkataraman, K., C. Sivaperuman & C. Raghunathan (eds.). Ecology and Conservation of Tropical Marine Faunal Communities. Springer-Verlag Berlin Heidelberg;

Venu, S. & B. Malakar (2015). Diversity of marine mammals of India - status, threats, conservation strategies and future scope of research, pp. 283–302. In: Venkataraman, K. & C. Sivaperuman (eds.). Marine Faunal Diversity in India: Taxonomy, Ecology and Conservation. Academic Press, UK;

Vermeulen, E. & A. Cammareri (2009). Residency patterns, abundance, and social composition of Bottlenose Dolphins (Tursiops truncatus) in Bahía San Antonio, Patagonia, Argentina. Aquatic Mammals 35(3): 379–386;

Vivekanandan, E. & M. Rajagopalan (2011). Challenges in Marine Mammal Conservation & Research in the Indian Ocean, Central Marine Fisheries Research Institute, Kochi.

Vivekanandan, E. & R. Jeyabaskaran (2012). Marine Mammal Species of India. Central Marine Fisheries Research Institute, Kochi, 228pp