During Dive 12 of the Gulf of Mexico 2017 expedition, we set out to explore a side scan sonar target thought to represent an archaeological site and related debris; however, the target instead ended up being a 40-foot shipping container and its contents. While not the shipwreck we were expecting, the dive provided valuable information. Identification markings found on the container may help to track it, which could provide a maximum date as to when observed animals colonized these structures, allowing us to estimate growth rates of sessile organisms. The dive also served as a reminder that, even in the deep ocean, humans can have an impact. Learn more