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  Category   Marine Mammals of BC: Sealions
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Sea Lions


Sea lions basking in the islands of Haida Gwaii
There are two species of sea lions that occur in British Columbia waters. The two may be found together, but they are here for different reasons.

Sea lions, unlike the ubiquitous Harbour Seal of the coast, are able to move about on land using their four flippers. They are further distinguished by their longer necks and external ears. Sea lions gather at "haul-outs", where the two species loaf side-by-side.

They are sometimes seen on the rocks beside the ferry route through Active Pass, and at Race Rocks near Victoria, among many other suitable rocky islets. From December through April, sea lions converge on the east side of Vancouver Island to feed on herring that are returning to spawn. The log booms at the pulp mill at Harmac has been a good spot to see both species, and further north, off French Creek, the herring spawn can produce a wildlife spectacle of epic proportions.

Both species of sea lions may be preyed on by the transient race of Killer Whales, which almost exclusively eat marine mammals.

Steller's Sea Lion (Eumetopias jubatus)


Steller's Sea Lions
These are two distinct Steller's sea lion populations. B.C.'s population of Steller's sea lions, which breed in three rookeries in northern British Columbia, has more than doubled since the early 1970s, to between 13,400 and 18,800 animals, including 2,300 pups (survey conducted by the Pacific Biological Station in Nanaimo). Steller's that breed in nearby southeast Alaska have also increased from about 11,000 to 20,000 animals over the same period. They survive mainly on herring and other oily fish.

Steller's sea lions in the Gulf of Alaska, west of Prince William Sound, were declared endangered in 1997. In that part of the North Pacific, 700 kilometres northwest of B.C., a general shift in biological makeup of the sea has reduced the amount of oily fish, and increased the amount of pollock in their diet, which is far less nutritious than fish like salmon or herring.

There are large colonies of Steller's, or Northern, Sea Lions off northern Vancouver Island, and off the southern end of Haida Gwaii, the former Queen Charlotte Islands. The male, or bull, is a huge animal, with an average weight of about 700 kilograms. Some may reach 1000 kilograms, with a body length of up to three metres. The females are about a third as large. Both are a warm brown in colour, with the bulls developing quite thick manes around their enormous necks.

The bulls compete with each other to maintain a harem of females, defending a territory for up to sixty days. Gestation of the single pup is almost a year, and pups may nurse for over a year. Females are known to live up to thirty years.

California Sea Lion (Zalophus californianus)


California Sea Lion
California Sea Lions breed to the south of British Columbia, and after the breeding season, the bulls disperse. Many move as far north as British Columbia, and Alaska, and this is the most abundant sea lion in our waters through most of the year. These bulls can be distinguished from the Steller's by their darker pelage (which looks black when wet) and by the prominently ridged forehead. Bulls may weigh up to 350 kilograms, and the cows (which are not seen in B.C.) are much smaller.

This is a playful species, which is well known as the trained "seal" in many circuses. The population is increasing, following decades of harvesting for meat and oil, and as threats to the commercial fishery.

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