Large Fins and Long Appendages (Eight Arms and Two Tentacles) with Elbow-Like Bends Give the Bigfin Squid Its Distinctive Appearance. These Squid Can Exceed 6...
Large fins and long appendages (eight arms and two tentacles) with elbow-like bends give the bigfin squid its distinctive appearance. These squid can exceed 6 meters (19.7 feet) in length. However, that's mostly arms and tentacles. The largest known bigfin squid was 6.4 meters (21 feet) long.
How big is the biggest squid ever?
The giant squid remains largely a mystery to scientists despite being the biggest invertebrate on Earth. The largest of these elusive giants ever found measured 59 feet in length and weighed nearly a ton.
Adult males weigh 403.5 to 1,415 g (0.890 to 3.120 lb), while adult females are 165 to 1,046 g (0.364 to 2.306 lb). Both sexes can attain a maximum documented weight of 1.8 kg (4.0 lb). The forward margin of the mantle on the ventral side is concave.