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".
Colossal squid
The colossal squid ("Mesonychoteuthis hamiltoni", from Greek "mesos" (middle), "onycho" (claw, nail), and "teuthis" (squid)), sometimes called the Antarctic squid or giant cranch squid, is believed to be the largest squid species in terms of mass. It is the only known member of the genus "Mesonychoteuthis". It is known from only a few specimens, and current estimates put its maximum size at long and weighing possibly up to , based on analysis of smaller and immature specimens, making it the largest-known invertebrate.