The Environment Agency is patrolling the River Severn to watch out for elver poachers.
They're using boats with special imaging equipment so they can see in the dark. Other officers patrol the banks.
The baby eels are a delicacy in the Far East and can command a high price, but fishing is strictly controlled. Anyone doing it without a permit can be prosecuted.
Bill Burleigh is an Environment Agency Fisheries Officer:
More top news
Mark Ormrod who served with Taunton-based 40 Commando was selected from more than 300 as one of 90 to take part in the games.
Bloodhound supersonic car will be moved from Avonmouth to Newquay today for testing, ahead of its 1000mph land speed world record attempt.
Police officers should not physically restrain people with known or suspected mental health problems, the official watchdog has said.