Escursioni nel Santuario dei Cetacei in Liguria | Whalewatching nel Mediterraneo | Birdwatching nel Golfo Ligure Grampo (Grampus griseus)

Le dimensioni medie di un esemplare adulto di Grampo si aggirano attorno ai 3.5 m, con un peso medio di 300-400 kg, mentre le dimensioni massime possono arrivare a sfiorare i 4.5 m con un peso attorno ai 600 kg.

The average size of an adult Risso’s dolphin is around 3.5 m, with an average weight of 300-400 kg, while the maximum size can reach almost 4.5 m with a weight of around 600 kg.

Risso’s has a characteristic color that allows it to be easily recognized by the "whale-watcher": the shade goes from light gray, typical of young specimens, to steel gray with the presence of white scratches that tend to make the color less homogeneous. especially in the rostral area.

Swimming, unlike other species, is rather slow, with emergence for breathing roughly every 15 seconds. They generally live in herds made up of a variable number of individuals from 3 to over 50. A curious attitude is the so-called "headstanding" (or vertical) in which the animal stands upside down with its tail out of the water, while the opposite situation is already rarer, the so-called “spyhopping”, a behavior which can however be easily observed in the Delphinids

Risso’s dolphin is an animal that prefers temperate-warm waters (with a temperature that does not drop below 10°C).

Risso’s sightings carried out by the boats of the Liguria Via Mare Consortium:

2024: 4 herds of Risso’s spotted in 94 outings

2023: 8 herds of Risso’s spotted in 82 outings

2022: 3 herds of Risso’s spotted in 77 outings

2021: 2 herds of Risso’s spotted in 55 outings

2020: 2 herds of Risso’s spotted in 35 outings

2019: 4 herds of Risso’s spotted in 33 outings

2018: 3 herds of Risso’s spotted in 50 outings

2017: No herd of Risso’s spotted in 39 outings

2016: No herd of Risso’s spotted in 53 outings

2015: 1 pod of Risso’s spotted in 43 outings

2014: 2 herds of Risso’s spotted in 48 outings

2013: 1 pod of Risso’s spotted in 55 outings

2012: 1 pod of Risso’s spotted in 47 outings

2011 (data referring to the April-June period only): no herd of Risso’s spotted in 20 outings

2010: 7 herds of Risso’s spotted in 83 outings

To view the complete list of sightings click here.

Look at the photos of Rissos spotted during our outings.