A scout leader, an ex-police officer, a foster carer and a social service manager are among the 59 people arrested in Wales.
The six month long operation targeted people accessing indecent images of children online.
It has to date seen 660 arrests with more than 400 children across the UK safeguarded.
The arrests by Welsh police forces are as follows:
- Dyfed Powys Police - 7 arrests and 5 children protected
- Gwent Police - 14 arrests and 14 children protected
- South Wales Police - 30 arrests and 23 children protected
- North Wales Police - 8 arrests
More top news
It's not too bad out there tonight. A few showers over northern areas, but dry elsewhere with temperatures degrees milder than last night.
Traders across Wales have told ITV News the migrant crisis in Calais is having a 'devastating' impact on their business.
The Balmoral is back but for how long? Volunteers appeal for public support to keep her sailing the Bristol Channel.