Kogia simus   (Owen,  1866) (Whale)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Mammalia
Order:Cetartiodactyla
Family:Physeteridae

Description
Size: 2.7 m

Weight: 210 kg

This species is very similar to Pygmy Sperm Whale Kogia breviceps, but smaller. The snout is shorter than that of the Pygmy Sperm Whale. The shape of the head changes with age. In young individuals the snout slopes downwards to the front; in an older animal it is straight, giving it a squarish profile. The dorsal fin is taller than the Pygmy Sperm Whale, more than 5 percent of the total body length, and positioned farther forward on the back. This fin has a broad base, and a concave trailing edge. Like Pygmy Sperm Whale, Dwarf Sperm Whale may appear wrinkled. They differ from Pygmy Sperm Whale in having several short, irregular creases or grooves on the throat. There may be 7-13 pairs of teeth in the lower jaw. Unlike the Pygmy Sperm Whale, this Whale may have up to 3 pairs of undeveloped teeth in the upper jaw as well. The teeth of this species are shorter and more slender than those of the Pygmy Sperm Whale.

Dwarf Sperm Whale are mostly encountered at the sea lying at the surface, ‘like so many logs afloat’. They are usually seen in groups of 2-7 individuals.


Synonym (s)

Common Name (s)
• Dwarf Sperm Whale (English)
Economic Importance and Threats

Ecology
Habitat:  Open Sea
Prey:  Fish and squid
IUCN Status:  Data Deficient

Biogeography


• Andhra Pradesh, Vishakhapatnam INDIA
• Kerala, Trivandrum INDIA
• SRI LANKA
• Tamil Nadu, Gulf of Mannar INDIA (Record: 2003)

Literature Source(s)
  • Sathasivam K (2004) Marine mammals of India Universities Press(India) private limited, Hyderabad, India 180 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at - eprints.cmfri.org.in/3975/1/Special_Publication_No_12_Revised.pdf
  • Padmanaban P and Dinesh K.P (2011) A checklist of Marine Mammals of India Marine Biology Reginal centre, Zoological Survey of India 4pp Available at - http://zsi.gov.in/checklist/Marine%20mammals%20of%20India.pdf
  • Jefferson, TA; Leatherwood, S and Webber, MA (2006) Marine mammals of the world World biodiversity database Available at - http://nlbif.eti.uva.nl/bis/marine_mammals.php?menuentry=inleiding
  • (2003) IUCN Red list of threatened species Available at - http://www.iucnredlist.org/

Page last updated on:2012-11-07

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