Effect of water temperature on seasonal vertical migration of the immature North Pacific giant octopus Enteroctopus dofleini in the Soya/La Perouse Strait

January 1, 2026NIPPON SUISAN GAKKAISHIOpen Access

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Key Points

The aim is to understand how water temperature affects the vertical movement patterns of immature North Pacific giant octopuses.
Conducted tagging and release surveys using water temperature loggers in the Soya Strait during 2013-2014.
Monitored water temperatures and octopus movements from December to April and June to September.
Octopuses stayed in shallow areas from December to April at temperatures between -1.5 to 5°C.
Migration to deeper waters began when temperatures exceeded 10°C, and octopuses moved to depths with temperatures of 10-20°C.
As coastal water temperatures decreased in September, octopuses returned to shallow waters.

Observes seasonal vertical migration in immature octopuses, suggesting temperature influences movement patterns.

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Sano et al. (2026) studied this question.

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