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shrtfpilot

(C) 1997 Nanami Kurasawa

 

The adult can vary at any length between 3.6 -6.5 meters and weigh between 1-4 tonnes and newborn calves can measure between 1.4 - 1.9 meters.

These whales are distributed on a worldwide basis and can be found in tropical, subtropical and warm temperate oceans inhabiting both offshore and inshore areas. Their diet mainly consists of fish, squid and/or octopus. They belong to the Delphindae family and can be divided into 2 distinct populations off Japan consisting of the northern form (Tappanaga) and the southern form (Magondo). The Short-Finned pilot whale can form pod sizes of anywhere between 10 and 50 individuals.

The structure of their groups tends to be matriarchal, not unlike elephants, and swim in formation usually abreast. They also can peacefully co-exist with other small cetaceans within their habitat such as bottlenose dolphins. These whales are very active and often engage in rolling, lobtailing and sometimes spyhopping.

Unfortunatly due to their tight large groups they are also susceptible to mass stranding. Many also fall victim to hunting around Japan, which caused serious depletion of the two populations, Tappanaga and Magondo, both of which are now listed by the Fisheries agency as 'rare'.

IKAN Guide to Whales Index
Following are cetaceans which are considered inhabitants of Japanese coastal waters.
Inside round brackets are Japanese names.
Open index Close index
porpoises
(nezumiiruka ka)

harbour porpoise (nezumi iruka) / finless porpoise (sunameri) / Dall’s porpoise (ishi iruka)

oceanic dolphins
(mairuka ka)

rough-toothed dolphin (siwahairuka) / bottlenose dolphin (handou iruka) / striped dolphin (suji iruka) / pantropical spotted dolphin (madara iruka) / northern right whale dolphin (semi iruka) / common dolphin (mairuka) / long-beaked common dolphin (hase iruka) / Fraser’s dolphin (Sarawak iruka) / pacific white-sided dolphin (kama iruka) / melon-headed whale (kazuha gondo) / pygmy killer whale (yume gondo) / false killer whale (oki gondo) / orca - killer whale (shachi) / long-finned pilot whale (hirenaga gondo) / short-finned pilot whale (kobire gondo) / Risso’s dolphin (hana gondo)

beaked whales
(akabo kujira ka)

Cuvier’s beaked whale (akabo kujira) / Baird’s beaked whale (tuchi kujira) / Stejneger’s beaked whale (ohgi hakujira) / Hubbs’ beaked whale (habbus ohgi hakujira) / Blainville’s beaked whale (kobuhakujira) / ginkgo-toothed beaked whale (ichou hakujira)


Names of whales without links are under construction. Coming soon.

Reference:

  • About Rare Aquatic Life in Japanese Waters, National Fisheries Agency
  • Red List of Japanese Mammals, Mammalogical Society of Japan
  • Whales and Dolphins, Anthony R. Martin
  • Whales, Dolphins and Porpoises, Mark Carwardine
  • Killer Whales, Ford / Ellis / Balcomb