‘Heat dome’ probably killed 1bn marine animals on Canada coast, experts say

British Columbia scientist says heat essentially cooked mussels: The shore doesn't usually crunch when you walk'

More than 1 billion marine animals along Canada's Pacific coast are likely to have died from last week's record heatwave, experts warn, highlighting the vulnerability of ecosystems unaccustomed to extreme temperatures.

The heat dome" that settled over western Canada and the north-western US for five days pushed temperatures in communities along the coast to 40C (104F) - shattering longstanding records and offering little respite for days.