In other areas including Northern Ireland and the Isle of Man it's against the law to kill seals.
But in England, Scotland and Wales it's legal for fishermen to kill seals as long as they have a licence.
Tourists travel to see seals
In Northumberland thousands of people travel to the area to see the seals and some even swim with them. Those tourists spend a lot of money in the region.
The laws protecting seals in Scotland ARE being looked at but there are no plans to change the law in England - so seals in Northumberland will still have to take their chances.