Species

White-beaked dolphin

medias

  • White-beaked dolphin
  • White-beaked dolphin

The white-beaked dolphin is a regular visitors to the Gulf from spring to fall, especially off the coast of the Lower North Shore.

The population of the white-beaked dolphin in the Gulf is estimated at 2600 individuals.

Its presence in the Estuary is exceptional and generally short-lived.

This specie live in the cold temperate waters of the North Atlantic. The white-beaked dolphin ranges farther north, inhabiting ice-free arctic and subarctic waters.

The white-beaked dolphin does not appear in the List of threatened or vulnerable species in Quebec.

This species is listed as “not at risk” by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC).

This species is designated “least concern” in the International Union for Conservation of Nature’s” (IUCN) Red List of Threatened

They feed primarily on small pelagic fish, squid and occasionally small benthic crustaceans.


Illustrated species: (from high to low, from left to right): herring, squid, shrimps.


This gregarious species live in groups ranging from 3 to 50 or so individuals, which in turn make up larger herds containing several hundred or even several thousand animals.


Photo credit: GREMM

The vocal repertory of this species is not known.

It is assumed that, like other odontocetes, they emit high-frequency sounds to navigate and detect their prey (echolocation) as well as lower-frequency sounds.

Dolphins are fast swimmers and can attain speeds of between 25 and 45 km/h.

Their swimming is both energetic and spectacular.

They leap and spin out of the water and land noisily on the surface.

The white-beaked dolphin is less exuberant than the Atlantic White-Sided Dolphin.

Their diving habits are poorly known, but their prey are generally located within 100 m of the surface.

No research is currently dedicated to this specie in particular.

Nevertheless, it is possible to consult the multi-species researches listed on Whales online to learn more about the researches leaded on the St. Lawrence River species.