At sea, the fishermen face violence, intimidation, dangerous working conditions and even murder, according to the EJF report.
Two fishermen from Burma have been arrested on trawlers in the Andaman Sea for allegedly murdering a Thai woman a month ago.
An Associated Press investigation uncovers ships believed to be carrying enslaved fishermen, many of whom may be Burmese.
Regardless of the desperate conditions in the hastily assembled camps, many Rohingya asylum seekers say the Acehnese are receiving them with open arms.
The first group of Burmese migrants among those rescued from slavery on remote Indonesian islands are flown to Rangoon on a government-sponsored flight.
Thai authorities are issuing labour ID cards to migrant workers within its fishing industry to combat rampant human trafficking in the trade.