Facts about Northern Fur Seal Dive
- 07
Foraging trips for northern fur seals typically last between 1 to 14 days, with mothers traveling hundreds of kilometers from rookeries to feed and then returning to nurse their young.
- 06
Pups born on rookery islands begin practicing swimming in tide pools and shallow waters before eventually developing the diving capabilities seen in adults.
- 05
Physiological adaptations enabling northern fur seal dives include a high concentration of myoglobin in their muscles, which stores oxygen for use during prolonged submersion.
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Northern fur seals can hold their breath for several minutes during a single dive, relying on oxygen stored in their blood and muscles.
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The northern fur seal's dive pattern typically involves a characteristic V-shaped or U-shaped profile, reflecting active pursuit of prey at depth.
- 02
During northern fur seal dives, males tend to forage in shallower, nearshore waters compared to the deeper offshore dives performed by females.
- 01
Female northern fur seals are remarkable divers, routinely foraging at depths of several hundred meters during extended foraging trips at sea.