The current global population was estimated to be approximately 1.1 million in 2004-2005. Abundance is declining. The overall decline is not proportional with the regions where the greatest decreases are occurring - in the Pribilof Islands – in fact, the small populations in the Kuril Islands and on Bogoslof Island in the Aleutians have increased. Approximate individual site population sizes are estimated as follows: Pribilof Islands: 688,028: Commander Islands: 225,000-230,000; Robben Island: 88,000; Kuril Islands: 45,000-50,000; San Miguel Island: 7,784 (Reijnders et al 1993). The Pribilof Islands population declined at 6.2% annually on St. Paul Island and 4.5% annually on St. George Island between 1998 – 2004 (Towell et al. 2006). Pup production on St. Paul again dropped, by 10.5% between 2004 and 2006. Once containing approximately 75% of the world population of northern fur seals, the Pribilofs currently have approximately 50%. Estimated pup production on St. Paul Island in 2004 was at a level equal to that observed in 1918, which was a time when the population was growing at a rate of 8% annually following cessation of the pelagic harvests (Towell et al. 2006), so the current declines are quite perplexing.
No one has provided updates yet.