Study Reveals Complex Camouflage Strategies in Semi-Pelagic Squid

A study published in Nature Scientific Reports (reference s41598-025-25212-z) examines the camouflage capabilities of the semi-pelagic squid Sepioteuthis lessoniana. The researchers identified three types of chromatic patterns: disruptive, uniform, and mottled. Disruptive patterns are characterized by a contrast threshold between light and dark components. Additionally, the squid's arm postures vary depending on whether it is resting on the substrate or suspended a few centimeters above it. These behaviors, not previously observed in this species or other loliginid squids, suggest convergent evolution with benthic octopuses and cuttlefish, likely due to their coastal habitat. The study does not provide specific temporal data regarding these behaviors.