Baby Giant Squids

Screen Shot 2015-11-05 at 7.25.28 PM We know almost nothing about Giant Squids with mantles lengths less than 1000 mm  (~40 inches).  Very young squids are even more enigmatic than adults.  A recent study reports the collection of three very young Giant Squids off the Japanese coast.  The three young measured 140.8, 332, and 332 mm (5.5 and 13 inches). The heaviest of the three weighed less than pound (390.6 g).  Unlike the adults the fins of the juveniles were quite tiny compared to the length of the body.  In juveniles the length of the tentacles were just a slightly longer than the body. In adults Giant Squids where the length of the tentacles can be over 3 times the length of the body.  With adulthood comes massive fins and tentacles!

Wada, T., Kubodera, T., Yamada, M., & Terakado, H. (2015). First records of small-sized young giant squid Architeuthis dux from the coasts of Kyushu Island and the south-western Sea of Japan Marine Biodiversity Records, 8 DOI: 10.1017/S175526721500127X

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Dr. M (1801 Posts)

Craig McClain is the Executive Director of the Lousiana University Marine Consortium. He has conducted deep-sea research for 20 years and published over 50 papers in the area. He has participated in and led dozens of oceanographic expeditions taken him to the Antarctic and the most remote regions of the Pacific and Atlantic. Craig’s research focuses on how energy drives the biology of marine invertebrates from individuals to ecosystems, specifically, seeking to uncover how organisms are adapted to different levels of carbon availability, i.e. food, and how this determines the kinds and number of species in different parts of the oceans. Additionally, Craig is obsessed with the size of things. Sometimes this translated into actually scientific research. Craig’s research has been featured on National Public Radio, Discovery Channel, Fox News, National Geographic and ABC News. In addition to his scientific research, Craig also advocates the need for scientists to connect with the public and is the founder and chief editor of the acclaimed Deep-Sea News (, a popular ocean-themed blog that has won numerous awards. His writing has been featured in Cosmos, Science Illustrated, American Scientist, Wired, Mental Floss, and the Open Lab: The Best Science Writing on the Web.