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Like other bobtail squid, southern dumpling squid have a light organ fuelled by symbiotic bioluminescent bacteria. The light organ, which is butterfly-shaped, is situated in the mantle cavity and is used to cancel out the bobtail squid's silhouette. There are large semi-circular fins on the rear half of the mantle.
Squid halide peroxidase is the main enzyme responsible for crafting this microbiocidal environment, using hydrogen peroxide as a substrate, but A. fischeri has evolved a brilliant counterattack. A. fischeri possesses a periplasmic catalase that captures hydrogen peroxide before it can be used by the squid halide peroxidase, thus inhibiting the ...
Euprymna hyllebergi have been observed burrowing into the sand and burying themselves to create a coat of sand over their bodies. When beginning to burrow into the sand, E. hyllebergi use a mix of rocking their mantles, fin beating, and water jetting to dig their way beneath. To completely bury themselves below, they sweep their third arm ...
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Attempts to capture a glimpse of a live giant squid—described as "the most elusive image in natural history" [44] —were mooted since at least the 1960s. [45] Efforts intensified significantly towards the end of the century, with the launch of several multi-million-dollar expeditions in the late 1990s, though these were all unsuccessful.
Taningia danae, the Dana octopus squid, is a species of squid in the family Octopoteuthidae. It is one of the largest known squid species, reaching a mantle length of 1.7 m (5.6 ft) [3] and total length of 2.3 m (7.5 ft). [4] The largest known specimen, a mature female, weighed 161.4 kg (356 lb). [5]
A SQUID (superconducting quantum interference device) is a very sensitive magnetometer used to measure extremely weak magnetic fields, based on superconducting loops containing Josephson junctions. SQUIDs are sensitive enough to measure fields as low as 5×10 −18 T with a few days of averaged measurements. [ 1 ]
Bigfin squids are a group of rarely seen cephalopods with a distinctive morphology.They are placed in the genus Magnapinna and family Magnapinnidae. [2] Although the family was described only from larval, paralarval, and juvenile specimens, numerous video observations of much larger squid with similar morphology are assumed to be adult specimens of the same family.