The RNLI is again warning people not to treat weever fish and jellyfish stings with urine.
The urban myth continues, even though the treatment is actually hot water.
The warning comes ahead of the summer holidays.
Sex offenders 'facing a lack of rehab and monitoring'
BBC South West Home Affairs correspondent
A child sex offender who’s recently been released from prison and is looking to find a home in the South West, says chaotic living arrangements and a lack of help have increased the risk of him reoffending.
There are also concerns about the level of monitoring by the police.
A freedom of information request by the BBC revealed that each specialist officer in Devon and Cornwall has been assigned 60 sex offenders - when national guidance recommends a maximum of 50.
Diane Wills is from the South West charity, Circles...
The government says it's spending £6m helping vulnerable former prisoners find stable accommodation.
Devon and Cornwall weather: Dry and sunny with showers
Josh Clark collapsed with seizures after contracting meningitis five years ago.
His mother, Nicola Clark, said she was told the nearest ambulance was almost half an hour away, but firefighters from Woolacombe, trained as co-responders, attended within minutes and provided oxygen that could have prevented severe brain damage.
I feel that, without their response, areas like this don't have a chance."
A public consultation into the controversial proposals has started, which sees seven stations in Devon and one in Somerset earmarked for complete closure, while another eight could lose one of their engines.
The service said it wanted to bring an outdated service into the 21st Century and fire incidents in both areas had decreased 36% between 2008 and 2018.
South Western Ambulance Service said it was aware of the proposals but that it had "no concerns about the provision of fire co-responders, and will continue to maintain a high level of community response".
The agency's annual report said only one of the nine major water companies in England was performing at the expected level, with most likely to miss 2020 targets.
SWW was also given a red rating for pollution incidents for "consistently demonstrating unacceptable performance".
Trade body Water UK said the report was "disappointing" and the situation was "never black and white".
SWW said it recognised there was "still more to do and we have
an action plan in place to continue to drive improvement".
SWW provides water and sewerage services to Devon, Cornwall, plus parts of Dorset and Somerset.
Cost of agency staff hits hospitals after increases
Health Correspondent, BBC Spotlight
The cost of agency staff has rocketed at many hospitals in Devon and Cornwall, with levels now far higher than in 2014 and 2015, before measures were first introduced to reduce them.
The big spenders are the Royal Devon & Exeter, which spent just over £11.5m last financial year - its cap was £8.7m.
The Royal Cornwall Hospital spent £9.3m - more than 50% higher than at its original peak - with Torbay and South Devon spending roughly the same.
On the other hand Northern Devon Healthcare and University Hospitals Plymouth both reduced their spend considerably. Unfortunately there was no one available for interview to tell us how they had achieved that.
Agency staff use matters because it's more expensive to buy in agency workers than pay for staff and NHS finances are already tight. Agency workers may also be less familiar with the teams they are working in.
Demand for services is rising at a time when it is becoming increasingly difficult to fill jobs, particularly in nursing. Brexit may be making the UK less attractive to some European workers.
The Royal Devon and Exeter Trust said its priority was to maintain safe staffing at all times and that it had taken a series of actions to do this, including national and international recruitment, better conditions for temporary workers and reducing turnover rates.
The Royal Cornwall Hospital Trust also said it was trying to reduce such costs.