Many petrel species can be seen in New Zealand waters, and a large proportion of these species is endemic.
Mean number of petrels recorded around fishing vessels during
counts carried out by government observers, binned to 0.4 degree of longitude and latitude. The size
of the circle indicates the number of observations, whereas the colour indicates the
mean number of birds recorded during counts. Empty circles indicate that no birds were observed. The grey
areas indicate water depths of less than 1000 m.