Sightings and behavioral observations of Indo-Pacific Humpback Dolphins Sousa chinensis (Osbeck, 1765) along Chennai coast, Bay of Bengal
DOI:
https://doi.org/10.11609/JoTT.o3454.5002-6Abstract
Boat-based surveys were used to investigate the presence of Indo-Pacific Humpback Dolphins Sousa chinensis along the coast of Chennai, Tamil Nadu, India. Notes were collected on behavior, group size, coloration patterns and group composition on sighting cetaceans during the surveys. Four groups of Indo-Pacific Humpback Dolphins were sighted near-shore in the month of February 2011, between 10-25 m depth with an average group size of 20 individuals of which 10 individuals were photo-identifiable. Dominant group behavior was aerial display, feeding and traveling. This study gives a basic idea of presence, threats and habitat use of Humpback Dolphin areas along Chennai coast.
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