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".
List of giant squid specimens and sightings
Including the head and arms but excluding the tentacles (standard length, SL), the species very rarely exceeds according to O'Shea & Bolstad (2008). Paxton (2016a) considers to be the greatest reliably measured SL, based on a specimen (#47) reported by Verrill (1880a:192), and considers specimens of SL or more to be "very probable", but these conclusions have been criticised by giant squid experts (Greshko, 2016).