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Risso's dolphin

Grampus griseus

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Scientific illustrations: © 2021 Haruyoshi KAWAI

Weight
Up to  500 kg
Length
Up to 4m
Threats
Bycatch, direct hunting, overfishing and pollution.
Behaviour
Shy, slow swimmer but agile.
Group
Usually 5 to 10, but occasionally larger gatherings.
Diet
Cephalopods and krill.
Conservation Status

Mainland PT

Life Span
At least  30 years
Diving depth
At least  220m
Diving time
Up to 30 minutes

Find out more about the marine megafauna in Portugal with the official AIMM Species Guide.

The Species Guide is a digital guide in English where you’ll find various information about the marine species that occur in mainland Portugal. You’ll find biological information, behavior, conservation status and much more!

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