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The squid giant axon is the very large (up to 1.5 mm in diameter; typically around 0.5 mm) axon that controls part of the water jet propulsion system in squid.
Photo shot through a polarizing filter of a Cranchiidae sp from the Operation Deep Scope Expedition 2004. This squid, about four-inches across, uses transparency to hide from potential predators.
Perhaps the best video of a live colossal squid is that of an animal recorded at the surface in the D'Urville Sea off Antarctica in January 2008. [21] The squid was pulled to the surface feeding on a line-caught toothfish. The video is likely the first to show a colossal squid swimming freely, and records the animal performing a slow roll on ...
The squid giant synapse (Fig 1) was first recognized by John Zachary Young in 1939. It lies in the stellate ganglion on each side of the midline, at the posterior wall of the squid’s muscular mantle. Activation of this synapse triggers a synchronous contraction of the mantle musculature, causing the forceful ejection of a jet of water from ...
The list includes records of giant squid (genus Architeuthis) either supported by a physical specimen (or parts thereof) or—in the absence of any saved material—where at least one of the following conditions is satisfied: the specimen was examined by an expert prior to disposal and thereby positively identified as a giant squid; a ...
The most common question that arises about giant squid is whether these huge animals attack humans or pose a threat to ships. We must answer this question in the affirmative, although certainly not in the case of large, modern cruise ships. There is no doubt, however, that a smaller ship or boat can occasionally be attacked by such a giant.
The giant squid is widespread, occurring in all of the world's oceans. It is usually found near continental and island slopes from the North Atlantic Ocean, especially Newfoundland, Norway, the northern British Isles, Spain and the oceanic islands of the Azores and Madeira, to the South Atlantic around southern Africa, the North Pacific around Japan, and the southwestern Pacific around New ...
Squid are also known to be sensitive to temperature, salinity, and circulation in the water. [10] These habitat components can affect reproduction and life cycles. Chinese spear squid at different growth stages sometimes have different names among fishermen: they call the larvae of squid "small rolls", and the sub-adults are called "middle ...