The A30 matriline is the name given to the most commonly seen orca matriline in British Columbia. The matriline is currently made of 3 generations, with a total of 12 individuals. It is one of the 3 matrilines in A1 pod, one of the 10 pods of the A-clan. The matriline was present in over 60% of all of the encounters in the Johnstone Strait region, making it one of the best known matrilines. The group's size has increased, from 6 in the mid-1970s to 10 as of 2013 then 12 in 2017. It is most frequently seen in Johnstone Strait from late spring to early fall, often traveling with other pods of the Northern Resident Community.