A British man has died after being bitten by a sea snake while working on a fishing trawler off the Northern Territory coast.

Northern Territory Police said the 23-year-old was bitten while pulling up a net about 12:00pm on Thursday, about 70 nautical miles south of Groote Eylandt.

A CareFlight helicopter crew and ships in the area rushed to help but were unable to save the man.

Craig Garraway from St John Ambulance said there was little emergency services could do to help the man.

“A trawler off Groote Eylandt had reported that one of their male crewmen had been bitten by a sea snake,” Mr Garraway said.

“The Groote Island health clinic and police responded to the trawler, but unfortunately the male passed away at some point yesterday afternoon.”

The man was declared dead after the trawler arrived at the town of Borroloola in the Gulf of Carpentaria.

The British High Commission has been informed of the man’s death.

Police are investigating and a post mortem will be carried out.

NT WorkSafe said in a statement it had been notified of the man’s death and had commenced an investigation into the incident.

It is not the first death involving a young British man aboard an Australian fishing boat in the north.

Twenty-year-old Ryan Donoghue was electrocuted on a prawn trawler in the Gulf of Carpentaria in November 2013.

NT Coroner Greg Cavanagh found his death was needless and a tragic waste of young life.

“It would have been prevented if there was even a modicum of compliance with the law,” Mr Cavanagh said.

-ABC