## metadata.csv ##

Squid = individual ID for each individual squid
CO2 = CO2 treatment level. Two levels: Ambient (same as current-day, ~450 µatm) and Elevated (~1,000 µatm)
Active_time_s = Time squid spent active throughout the behavioural trial (in seconds)
Dist = Total distance moved by squid throughout behavioural trial (in centimetres)
Vel = Average speed of squid throughout behavioural trial (in centimetres per second)
Time_A_s = Time squid spent in Zone A (3 cm closest to the mirror) throughout the behavioural trial (in seconds)
Soft_touch = Whether the squid touched the mirror softly with it's arm tips throughout the behavioural trial (Two levels: 0 (did not touch), 1 (touched at least once))
Soft_touch_no. = Number of times squid touched the mirror softly with it's arm tips throughout the behavioural trial
Aggressive_touch = Whether the squid touched the mirror aggressively throughout the behavioural trial (Two levels: 0 (did not touch), 1 (touched at least once))
Aggressive_touch_no. = Number of times squid touched the mirror aggressively throughout the behavioural trial