Human-induced climate change is the main factor behind record sea temperatures around Europe, scientists warn. The extreme heat is having serious consequences for marine ecosystems and coastal communities, they say.

Even the seas of Europe have not escaped the heat wave that has engulfed many countries this summer.
In July, the average temperature of the Mediterranean Sea reached 27 degrees Celsius, the highest level ever recorded for the month of July. Meanwhile, in early August, temperatures near the island of Mallorca reached 33 degrees Celsius.
According to an analysis by the World Weather Attribution (WWA) group, human-caused climate change has added about 2 degrees Celsius to the temperature of the Mediterranean and about 1.4 degrees Celsius to the temperatures of the seas of Western Europe.
Scientists warn that these temperatures could profoundly alter the ecosystems on which coastal communities depend for food and income, as well as contribute to the worsening of extreme weather phenomena on land.
The WWA analysis has concluded that the record temperatures recorded this year in the eastern and western parts of the Mediterranean, as well as along the Bay of Biscay and the coast of the Iberian Peninsula, would have been "almost impossible" without the influence of human-caused climate change.
In the Celtic Sea, between Britain and Ireland, the most extreme temperatures recorded this year would only be expected about once a century in a world without global warming caused by human activity.
Warmer seas increase humidity and nighttime temperatures in coastal areas, and may also contribute to the formation of more powerful storms during the second half of the year.
Greenhouse gas emissions, mainly from the burning of fossil fuels, have caused the planet's average temperature to be about 1.4 degrees Celsius higher than in the pre-industrial period, according to the World Meteorological Organization.
The increase in the planet's core temperature causes high-pressure atmospheric systems, which are associated with heat waves, to reach even higher temperatures.
The sudden increase in sea temperatures could cause mass die-offs of species, including corals, and disrupt food sources for seabirds and mammals, causing consequences throughout the food chain.
John Bruno, a marine ecologist at the University of North Carolina, said some species are moving north in search of cooler waters, but not all have the ability to adapt.
According to him, many species are rapidly approaching the biological limits of adaptation.
The WWA analysis also shows that around 90% of the Bay of Biscay and 80% of the Western Mediterranean experienced marine heatwave conditions this year. Without global warming, this percentage would be around 40%.