Risso's dolphin



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Picture has been licensed under a Creative Commons Attribution.
Original source: Cropped from rissos-dolphin_1. Photo shot with a Canon 20D w/ 100-400 mm IS lens handheld
Author: Cropped from photo by Mike Baird (bairdphotos.com)
Permission: This file is licensed under Creative Commons Attribution 2.0 License
Some facts about the
Risso's dolphin

Adult weight : 425 kg (935 lbs)

Maximum longevity : 43 years

Gestation : 365 days

Litter size : 1

Source: AnAge, licensed under CC

Risso's dolphin

Order : Cetacea
Suborder : Odontoceti
Family : Delphinidae
Species : Grampus griseus

 

The Grey dolphin, risso's dolphin is listed as Data Deficient (DD), inadequate information to make a direct, or indirect, assessment of its risk of extinction, on the IUCN Red List of Threatened Species

Namings for the Risso
A young / baby of a Risso is called a 'calf or pup'. The females are called 'cow' and males 'bull'. A Risso group is called a 'team, school, pod, herd, alliance (male) or party (female)'.

Facts about the Risso's dolphin

Most adult risso's dolphins are badly marked with scars, apparently caused by the teeth of other risso's dolphins. (Full text)

Behaviour: Risso's Dolphins are usually seen in groups of 3-50 animals. (Full text)

Department of Pathobiology, University of Florida, College of Veterinary Medicine, Gainesville, FL, USA The Risso's dolphin, Grampus griseus, is a cetacean that is typically found throughout tropical and warm-temperate waters. (Full text)

Grampus griseus The Risso's Dolphin (Grampus griseus) is a species of dolphin. (Full text)

Recognition at sea: The adult Risso's Dolphin is quite easy to recognise at sea with their distinctive scarring. (Full text)

Risso's dolphins are commonly called Grampus because of their species name, Grampus griseus. (Full text)

The Risso's Dolphin (Grampus griseus) is the only species of dolphin in the genus Grampus. (Full text)

Another common name for Risso's Dolphin is the Grampus (also the species genus) - although as a common name was historically used to describe the Orca. (Full text)

htm Infectious Diseases Jonovich & Sweat: The Risso's dolphin, Grampus griseus, is a cetacean that is typically found http://scholar. (Full text)

The Risso's Dolphin is a [CITIES-listed Endangered Species] (Full text)

(Cuvier, 1812) The Risso's Dolphin (Grampus griseus) is the only species of dolphin in the genus Grampus. (Full text)

COLOR Adult Risso's dolphins are usually dark gray with extensive white scarring. (Full text)

Risso's dolphins are frequently covered in white scratches and scars, which are usually caused by the teeth of other Risso’s dolphins, and this gives them a distinctly "battered" appearance. (Full text)

Behaviour: Risso's dolphins are usually seen in groups of 3-50 animals. (Full text)

Risso's dolphins are distributed world wide and are mostly seen in temperate and tropical waters. (Full text)

Risso's Dolphin range The Risso's Dolphin (Grampus griseus) is the only species of dolphin in the genus Grampus. (Full text)

The Risso's Dolphin (Grampus griseus) is a species of dolphin. (Full text)

Habitat informationGrampus griseus is a deep water species sighted close to shore where the continental shelf is narrow and around oceanic islands. (Full text)

Risso's Dolphins are often in the company of Pacific White-Sided Dolphins and Northern Right Whale Dolphins. (Full text)

  [Purchase Print] The typical lifespan of a Risso's dolphin is estimated to be at least 20 years and perhaps up to 40 years. (Full text)

White scarring, likely caused by other Risso dolphin's teeth, accumulates during the dolphin's life so that adult Risso's dolphins are almost entirely white. (Full text)

1. killer whale, killer, orca, grampus, sea wolf, Orcinus orca -- (predatory black-and-white toothed whale with large dorsal fin; common in cold seas)
killer whale
killer
orca
grampus
sea wolf
Orcinus orca
2. grampus, Grampus griseus -- (slaty-gray blunt-nosed dolphin common in northern seas)
grampus
Grampus griseus
(Source WordNet)

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