It's strictly enforcement. Okay. This actually was the subject of a lot of discussion at the international marine protected area conference in September: how are countries with few resources going to monitor MPAs and intrusions of fishing vessels and all sorts of things into MPAs?
People are looking to technology. Particularly in the coastal zones now, they're experimenting with using drones to overfly MPAs on a regular basis and essentially videoing the area. With a drone, you can record the time and the location of any boat that comes into the area. In Australia, they've developed a smartphone app for pleasure boaters or people who do sport fishing that lets them know when they have crossed the boundary into a no-take area of an MPA: their phone starts to beep.
There are all sorts of technological, fairly inexpensive solutions for this that don't necessarily require a lot of people with uniforms and side arms in patrol boats.