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Harbour Seal Conservation
There are periodic calls for a return of a culling program in
response to conflicts with fisheries. Aquaculture operations
are licenced to shoot nuisance seals in British Columbia.
Human disturbance from boaters is probably only a local
concern. More insidious is the accumulation of toxic chemical
wastes in the tissues. Seals in the Strait of Georgia Basin
and Puget Sound carry elevated levels of PCB, PCDD and PCDF
(Ross et al. 1996, 1997, Swart et al 1996). Their concern is
that some of the seals are carrying levels above those found
to produce immunotoxic effects. Harbour seals are also
vulnerable to oil spills (Frost et al. 1994).
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