This is a video of common dolphins bowriding near a ship off the coast of La Gomera (Canary Islands).
Dolphins of the Bay of Biscay: here.
Common dolphins in Ireland: here.
From The Times in Britain:
Melanie Reid, London
June 21, 2007
Scientists say that the phenomenon may be the result of rising sea temperatures off the west coast of Scotland.
The Hebridean Whale and Dolphin Trust has also recorded changes in the habits of minke whales. Until 2005, minkes arrived in the (northern) spring and stayed until October and November, but they are now leaving in July and August. The trust monitors whale and dolphin populations around the Argyll Islands, which are regarded as an important European cetacean habitat.
Nearly a third of the world’s population of whales, dolphins and porpoises have been recorded there.
Sightings of basking sharks and beaked whales, a warm-water species rarely seen in the Hebrides, were also becoming increasingly common. There has been a corresponding decline in sightings of colder-water cetaceans such as the white-sided dolphin and the white-beaked dolphin.
Whales and dolphins are regarded as signal species for research into oceanic change because they are at the top of the food chain. Their distribution and wellbeing provide a good indication of the health of the entire ecosystem.
Minke whale in Amazon river: here.
Global warming and tropical reef fishes: here.
Whale sharks: here.
3 White beaked dolphins rescued in the Hebrides: here.