New Zealand fishermen recently caught an oversized octopus about 4 meters long in seawater more than 900 meters deep. This is the largest octopus found in the world. After analysis, local marine biologists pointed out that this octopus was actually much bigger when it was alive, because it would shrink after death. It is understood that there are hundreds of different kinds of octopus in the world. They usually only live in shallow waters and are not very big. Therefore, marine biologists believe that the discovery of this octopus is of great significance. At present, they are stepping up their research, hoping to determine the species of this octopus.