Given the overlap in prey between these sea lions and common dolphins
, it would be reasonable to expect some impact on the dolphins as well (Heyning and Perrin 1994, Melin et al.
Morbillivirus infection in stranded common dolphins
from the Pacific Ocean.
In addition to their individual species' models, short- and long-beaked common dolphins
were combined into an additional Delphinus species category because the 2 species were not recognized formally as distinct until 1994 (Heyning and Perrin, 1994).
Dan also snapped common dolphins
near Seal Island, South Africa
In late July a common dolphin
was spotted alive on the shore at Mayo's Killala Bay, but efforts to refloat it failed and it died.
Risso's and common dolphins
were the only species reported during all aerial survey years (Table 6).
On average, 85 such incidents are recorded every year, mostly involving solitary pygmy sperm whales and common dolphins
Long-beaked common dolphins
, Bronze whaler sharks, Bryde's whales, and Cape gannets alter their ecology or behaviour just to dine on the sardines.
Humpback whale sightings can't, unfortunately, be guaranteed but more likely to be seen are common dolphins
- usually mid-crossing in the summer in groups of five-to-10 as they leap acrobatically or ride the ship's bow wave.
A wide range of whale and dolphin sightings will be possible including huge schools of Common Dolphins
, as well as Bottlenose Dolphins, Risso's Dolphins, Harbour Porpoises, Minke Whales and, on a good day, Orcas
A marked increase was seen after the early 1980s, mostly involving common dolphins
and harbour porpoises.
Impressive We notch up 295 Striped Dolphins, 18 Bottlenose Dolphins, 141 Common Dolphins
(a misnomer if ever there was one for such graceful creatures), 10 undentied Dolphins and ve Harbour Porpoises.
BDMLR chairman Alan Knight, who said all the dead animals were common dolphins
, added that in 20 years he had not seen anything like it before.
Even common dolphins
, once the most abundant species in the Mediterranean, are now classified as Endangered in the IUCN Red List.
Further north in Cardigan Bay, resident bottlenose dolphins are joined by visiting common dolphins