Police warn about reckless behaviour on water after more than £55,000 of damage was caused.
The death at a property on Tresco is not being treated as suspicious, say police.
Samples from the New Grimsby area detect "low levels of coliform bacteria", South West Water says.
The pup is improving after being found on an inaccessible beach, rescuers say.
The event on a sandbar in the Isles of Scilly takes place in extreme low tides.
Ashley Cox's brother Josh Clayton was found dead in the sea off the Isles of Scilly in 2015.
Saturday night's incredible colours had people reaching for their cameras across the UK.
The woman suffered a head injury in the incident off the Isles of Scilly, the UK Coastguard said.
The sighting of the Egyptian vulture, if confirmed to be wild, would be the first for 153 years.
