Risso's dolphin

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Ris·so's dolphin

A marine mammal (Grampus griseus) having a bulbous head, a tall curved dorsal fin, and a gray body with white streaks or scars. Also called grampus.

[After Antoine Risso (1777-1845), French naturalist born in Nice.]
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References in periodicals archive ?
It had the rounded blunt head of a Risso's dolphin but the whole thing appeared to be dark and not pale.
The albino Risso's dolphin was driven into a cove over the weekend by fishermen at Taiji in Japan, said Sea Shepherd, which has teams of observers in the remote town.
northern right whale dolphin (Lissodelphis borealis), and Risso's dolphin (Grampus griseus).
In August a Risso's dolphin was spotted on the sand at Elly Bay in north Mayo.
There are few records of Risso's dolphin in the southern North Sea but a group of three dolphins seen on September 14 were identified as Risso's.
Last year, a badly injured Risso's dolphin died in the Clyde after resisting attempts to return it to the sea.
Hopes have been fading for the survival of the 10ft long Risso's dolphin, which is emaciated and has lacerations on its body.
The top five of these marine mammals are the bottlenose dolphin (2,000 ppm), killer whale (more than 1,000 ppm), Risso's Dolphin (more than 1,000 ppm), harbor seal (205 ppm), and the Beluga whale (128 ppm).
The site is also visited regularly by the grey seal, bottlenose dolphin and Risso's dolphin.
Multispecies sightings were observed on 15 occasions for 7 dolphin species; the northern right whale dolphin and Pacific white-sided dolphin mixed most frequently (5 times), bottlenose dolphin and common dolphins mixed 3 times, Pacific white-sided dolphin and short-beaked common dolphin mixed 2 times, striped dolphin (Stenella coeruleoalba) and unidentified common dolphins mixed 2 times, and single occurrences were recorded of Pacific white-sided dolphin with unidentified common dolphins, Risso's dolphin with northern right whale dolphin, and Risso's dolphin with bottlenose dolphin.
Risso's Dolphin One of the largest types of dolphin, these are often found in West Wales and prefer our temperate waters during the summer months from May through to September.