Risso's dolphin
The Risso's dolphin (Grampus griseus) is a species of dolphin, and the only species of dolphin in the genus Grampus. He is related to the Pygmy killer whales. Large specimens measures 3 meters (10 ft) in lenght. This species dives to a depth of 600 meters (2,000 ft).[2]
| Risso's dolphin Temporal range: [1]
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| Size difference between a Risso's dolphin and a person. | |
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| Genus: | Grampus Gray, 1828
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| Grampus griseus | |
Risso's Dolphin Media
Illustrations by Edward Drinker Cope in 1876
A three-dimensional model of a skeleton
A calf bears no scars, in contrast to its mother behind it.
The scar patterns are so pronounced and persistent in this species that they can be used to distinguish individuals over a lifetime.
A Risso's dolphin swims off Morro Bay.
A Risso's dolphin in the Gulf of Genoa
Risso's dolphin off Port San Luis, Harford Pier, at Avila Beach, California
Natural Resources Wales work on the conservation of Risso's dolphins around Bardsey Island, Wales
References
- ↑ "Fossil Works". Fossilworks.org
- ↑ Based on a 2002 study by Baird and Robin.
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Wikispecies has information on: Grampus griseus. |