According to National Geographic, the largest squid ever found measured 59 feet long and weighed about a ton. The squid was a "giant" squid, the largest of the more than 280 squid species found worldwide.
Since the ocean giants live at least 1,000 feet below the surface of the water, much of their observation has been done by studying specimens that have washed ashore. They were not filmed live until 2006, and the giant squid was first recorded in its natural habitat in 2012. The largest invertebrate on the planet, the giant squid is well known for its eyes, which may reach the size of beach balls.