Bids from Cumbria and New York added to the excitement as the gavel fell 62 times during the Dolphin Discovery Trail auction.
John Randall was in charge of selling the statues, raising money for the GSPCA and Autism Guernsey.
Steve Byrne of the animal welfare charity was monitoring incoming bids while Andrew Sparkes of Autism Guernsey was helping with the raffle. Volunteers from both charities were helping with both fundraisers.
The auction itself raised more than £40,000 on the night.
Before it had even began, more than 36 pre-bids had been placed. Most of the 62 dolphins then sold for more than their asking price of £500.
The highest bid of the evening was £1,600 for Fairytale, sponsored by TISE and painted by Dom Ogier-Keltie. Another standout was Hermia, sponsored by Herm Island and decorated by India Waterhouse, which sold for £1,250.
In total, the Dolphin Discovery Trail has raised more than £80,000 which will be split between Autism Guernsey and the GSPCA.
The 62 dolphin statues had been sponsored by a local business or group and decorated by by talented artists, schools, and community organisations.
Volunteers including from the Guernsey Freemasons and Artex Guernsey team had helped logistically including moving the 62 statues from their public display locations to the Peninsula Hotel for the auction.
Anyone who bought a dolphin can now collect them from the Peninsula Hotel, with Steve Byrne on-site from 10:00 to assist.
The GSPCA can deliver for a minimum donation of £30 which will go to the total raised by the Dolphin Discovery Trail.