Meteorologists are monitoring what they believe to be record-breaking marine heatwaves off northeast England and northwest Ireland.
Sea temperatures around the UK and Irish coasts are up to five degrees Celsius warmer than normal for this time of year, smashing records.
Parts of the North Sea are in a category four “extreme” marine heatwave, the US National Oceanic and Atmospheric Administration has warned.
Temperatures are particularly high around the north-east coast of England and the west of Ireland.
Warming seas could bring jellyfish and basking sharks closer to the shore, and cause poisonous algae to bloom.
The marine heatwave has deeply concerned marine scientists.
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