But delayed paperwork from the Spanish government is holding up his return, and a direct flight may not be possible adding cost and delay.

“Although thankfully we received the Guernsey export paperwork very quickly thanks to the States vets, we are still awaiting the Spanish import paperwork and we may have some other challenges to face,” GSPCA Manager Steve Byrne said. 

“To move endangered species like loggerhead turtles we require export and import Convention on International Trade in Endangered Species of Wild Fauna and Flora documents.” 

It had been hoped that a generous offer from locals with an aircraft meant Bill would be able to fly directly from Guernsey to Gran Canaria just after Christmas, but that’s now up in the air. 

“Currently there are concerns we might not be able to fly direct due to the UK being outside of the EU and we are awaiting clarification on what might need doing and what options we have,” Mr Byrne said. 

"The last turtle pre-Brexit, the process was much easier and we are aware of eight turtles also needing to be transported to the same rescue from the UK in similar situations." 

While the charity awaits further information, it’s calling on any islander with a heated swimming pool to open it up to Bill who will soon require more space to swim and grow. 

“The most important thing is we need to get Barnacle Bill back where she belongs as she is growing every day, and we may need to find her much larger swimming quarters.” 

Anyone willing to help should contact steve@gspca.org.gg or call 01481 257261.