The RSPB says around 400 birds in total have been rescued from along the south coast but experts are still trying to detmenine exactly what caused the pollution incident.
The charity says it highlights the need for sea birds to be given formal protection in marine conservation zones. Richard lawrence reports.
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More than 150 boats are taking part in the World Pilot Gig Championships - the biggest in its 27 year history.
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RNLI lifeguards will start patrolling beaches in the region this weekend as the 2016 summer season get underway.