Author(s): Elisabeth Mauris
During prey capture, S. affinis exhibits a great variety of colour patterns, with rapid colour changes occurring especially during ejection of the tentacles. During prey ingestion, many different patterns are observed, though some occur very rarely. Ontogenetic changes of colour patterning occur between early juveniles and adult stages. Distinctive body postures appear particularly frequently in juvenile animals when disturbed. Both colour patterns and body postures appear as short‐lasting (acute) or long‐lasting (chronic) expressions, but only colour patterns may appear flash‐like (fractions of a second). Functional aspects of patterning are discussed.