Since July 2008 until the end of 2011, authorities in Australia seized 71 boats within its waters that were conducting illegal fishing operations. 7 boats were seized in 2011.
Between July 2007 and July 2008, authorities seized 186 boats for illegal activities, with 141 boats being Indonesian-owned boats.
In 2004, around 367 illegal boats were apprehended.
(Additional data about illegal fishing boats.)
Source: Caitlin Howlett, “Fishing without borders,” ABC, “December 13, 2011.