The large cannon on the Monterrey A Shipwreck appears to have been mounted on a pivot carriage which has led archaeologists to believe the site may be the remains of a privateer. The muzzle, on the right, rests on top of another cannon. The image illustrates that the Monterrey Shipwrecks are home to a diverse biological community. Exploration conducted at these sites provides not only a window into the past but also reveals how, over time, the deep-water environment affects shipwrecks and how shipwrecks affect the environment.