Colossal squid
The largest recorded specimen was captured in 2007 by a New Zealand fishing boat off Antarctica. It was initially estimated to measure in length and weigh . The squid was taken back to New Zealand for scientific study. A study on the specimen later showed its actual weight was , but it only measured in total length as a result of the tentacles' shrinking "post mortem".
Galiteuthis phyllura
In 1984, the Russian stern-trawler "Novoulianovsk" brought up the remains of a gigantic specimen of "G. phyllura" from a depth of 1000–1300 m in the Sea of Okhotsk. Based on this material, which consisted of a 40 cm long arm and 115 cm tentacle, Kir Nesis estimated the mantle length at 265–275 cm, and the total length at over 4 m. This would make it the second largest squid species in terms of mantle length, after only the colossal squid, and even larger than the giant squid. However, Nesis added that "because of its narrow body, we conclude that its mass is consistently lower than that of the other large squids".