Figure 4 in In situ observations on behaviour of the ommastrephid squid genus Illex (Cephalopoda: Ommastrephidae) in the northwestern Atlantic

Figure 4. Compilation of data on vertical distribution from these videotaped observations. Filled circles: observations from the Gulf of Mexico; open circles: from other areas. Top: Depth of observation versus local time; bottom: distance above the bottom versus local time. Some circles represent overlapping records. Range bars indicate changes in submersible depth with squid continuously in sight.